How to Grow Catmint Plant

Catmint plant is a low-maintenance perennial that rewards gardeners with aromatic foliage and stunning lavender-blue flowers from spring through fall. This comprehensive guide covers everything you need to know about planting, caring for, and enjoying this pollinator-friendly herb in your garden.

If you want a plant that practically takes care of itself while putting on a months-long floral show, let me introduce you to the catmint plant. This charming perennial has earned a permanent spot in my garden, and after reading this guide, it will earn one in yours too. With its soft gray-green foliage and clouds of lavender-blue flowers, catmint plant brings a relaxed, cottage-garden vibe that works in almost any setting.

But don’t let its delicate appearance fool you. This member of the mint family is tough as nails. It laughs at drought, shrugs off poor soil, and keeps blooming when other plants have thrown in the towel. Whether you are a seasoned gardener or just starting out, learning how to grow catmint plant successfully is one of the smartest moves you can make for a beautiful, low-maintenance landscape.

Key Takeaways

• Sun lover: Catmint plant thrives in full sun with at least six hours of direct light daily for the best blooms and fragrance.
• Well-drained soil is essential: This herb hates wet feet and prefers lean, sandy, or rocky soil over rich, heavy clay.
• Drought tolerant once established: After the first growing season, catmint plant needs minimal watering and handles dry spells beautifully.
• Cut back after first bloom: Shearing plants by half after the initial flush encourages a second wave of flowers and prevents flopping.
• Deer and rabbit resistant: The strong minty scent deters browsing animals, making it perfect for unfenced gardens.
• Pollinator magnet: Bees, butterflies, and hummingbirds flock to the nectar-rich flowers all season long.
• Easy to propagate: Divide clumps every three to four years in spring or take softwood cuttings in early summer for free plants.

Quick Answers to Common Questions

How much sun does catmint plant need?

Catmint plant needs at least six hours of direct sunlight daily, preferably eight or more. Full sun produces the best flowering, strongest fragrance, and most compact growth. In shade, plants become leggy and bloom poorly.

When should I cut back my catmint plant?

Shear catmint plant back by half to two-thirds immediately after the first flush of blooms fades, typically late June to early July. This triggers a second heavy bloom period. Cut dead foliage to the ground in early spring before new growth emerges.

Is catmint plant the same as catnip?

No. Catmint plant (Nepeta x faassenii hybrids) is an ornamental perennial with sterile flowers that bloom for months. Catnip (Nepeta cataria) is a weedy herb that self-seeds aggressively and drives cats into a frenzy. Both attract cats, but catmint plant is far more garden-worthy.

Why is my catmint plant flopping open in the middle?

Flopping usually means too much shade, too rich soil, or too much water. Catmint plant prefers lean, dry conditions. Tall varieties like ‘Six Hills Giant’ may need support. Switch to compact varieties like ‘Cat’s Meow’ for naturally upright habits.

Can I grow catmint plant in containers?

Yes, compact varieties like ‘Cat’s Meow’ and ‘Junior Walker’ thrive in containers. Use a gritty, well-draining potting mix (cactus mix works well), ensure the pot has drainage holes, and water only when the top inch of soil is dry. Protect containers in winter in zones 6 and colder.

Getting to Know Your Catmint Plant

What Exactly Is Catmint Plant?

Catmint plant (Nepeta species) belongs to the Lamiaceae family, making it a cousin to culinary mint, sage, and lavender. While it shares the family’s signature square stems and aromatic leaves, catmint plant is strictly ornamental. Well, mostly ornamental. Cats do love it, but it lacks the intense essential oils that make catnip (Nepeta cataria) drive felines into a frenzy.

The most popular garden varieties are hybrids of Nepeta racemosa and Nepeta nepetella. These sterile hybrids do not self-seed aggressively like true catnip, so they stay polite in the garden. You will often see them sold under names like ‘Walker’s Low,’ ‘Six Hills Giant,’ ‘Cat’s Meow,’ and ‘Junior Walker.’ Each has slightly different habits, but all share that wonderful long bloom season.

Why Gardeners Love Catmint Plant

Let me count the ways. First, the bloom time is incredible. Most perennials flower for two to three weeks. Catmint plant? Try two to three months. The first flush hits in late spring, and with a quick haircut, you get a second show that often lasts until frost. That is serious flower power.

Second, the foliage stays attractive all season. The small, scalloped leaves form a neat mound that looks good even when the plant is not in bloom. The gray-green color provides a beautiful contrast to brighter greens in the garden.

Third, pollinators cannot get enough of it. On a sunny summer day, my catmint plant patches are literally buzzing with bees, butterflies, and the occasional hummingbird. If you want to support wildlife, this is one of the best plants you can grow.

Popular Varieties to Consider

‘Walker’s Low’ is the classic choice. Despite the name, it reaches 24 to 30 inches tall and wide. It was named Perennial Plant of the Year in 2007, and for good reason. Reliable, floriferous, and widely available.

‘Six Hills Giant’ lives up to its name at 36 inches tall and wide. It makes a bold statement but can flop without support. Great for the back of a border.

‘Cat’s Meow’ and ‘Cat’s Pajamas’ are newer, more compact varieties (14 to 18 inches) that hold their shape beautifully. Perfect for smaller gardens or the front of the border.

‘Junior Walker’ is a dwarf version of ‘Walker’s Low’ at 15 to 18 inches. Same great performance in a smaller package.

Choosing the Perfect Spot for Your Catmint Plant

Sun Requirements: More Is Better

If you remember one thing about how to grow catmint plant, make it this: full sun equals happy plants. We are talking at least six hours of direct sunlight, preferably eight or more. In partial shade, the plants get leggy, flop open in the center, and produce far fewer flowers. The essential oils that give the foliage its fragrance also diminish in shade.

I learned this the hard way. My first catmint plant went into a spot that got morning sun but afternoon shade. It survived, but it looked sparse and bloomed poorly. I moved it to a baking-hot south-facing bed the next spring, and the transformation was remarkable. Bushy, floriferous, and fragrant. Lesson learned.

Soil Preferences: Lean and Mean

Here is where catmint plant breaks all the rules. Most garden plants want rich, amended soil. Catmint plant? It prefers poor, lean, well-drained soil. Think sandy, gravelly, or rocky. Heavy clay is a death sentence unless you amend it significantly.

Why? In rich soil, catmint plant puts on lush, soft growth that flops and is more susceptible to disease. In lean soil, the growth is sturdier, the essential oil concentration is higher (better fragrance, better pest resistance), and the plant lives longer.

If you have clay soil, do not despair. Mix in coarse sand, fine gravel, or expanded shale to improve drainage. Raised beds work beautifully. Just skip the compost and manure. This is one plant that does not want a rich diet.

Drainage Is Non-Negotiable

I cannot stress this enough. Wet feet kill catmint plant faster than anything else. The crown (where stems meet roots) rots in soggy conditions, especially over winter. Before planting, dig a hole and fill it with water. If it does not drain within an hour, you have a drainage problem that needs fixing.

Solutions include planting on a slope, using raised beds, or creating a berm (a low mound of soil). In containers, use a gritty cactus mix or add plenty of perlite and coarse sand to regular potting soil.

Spacing for Air Flow

Give each catmint plant room to breathe. Space plants 18 to 30 inches apart depending on the variety’s mature width. Good air circulation prevents fungal issues like powdery mildew, which can occasionally bother catmint plant in humid climates.

Planting Your Catmint Plant: Step by Step

When to Plant

Spring is ideal, after the danger of hard frost has passed but before summer heat kicks in. This gives roots time to establish before the stress of hot weather. Fall planting works too, especially in zones 6 and warmer, provided you plant at least six weeks before the ground freezes.

Avoid planting in the heat of summer unless you can provide consistent water and some temporary shade. The stress of transplanting plus heat can be too much for a young catmint plant.

Preparing the Planting Hole

Dig a hole twice as wide as the root ball but no deeper. You want the plant to sit at the same level it was in the pot, or slightly higher (half an inch) to encourage drainage. Loosen the soil at the bottom and sides of the hole so roots can penetrate easily.

If your soil is heavy, this is the time to mix in your drainage amendments. But remember: no compost, no fertilizer, no rich amendments. Lean soil makes strong catmint plant.

Removing the Plant from Its Pot

Gently squeeze the pot sides to loosen the root ball. Tip it upside down, supporting the stem base with your fingers, and slide the pot off. If roots are circling the bottom (root-bound), gently tease them apart with your fingers or make a few vertical cuts with a clean knife. This encourages outward growth.

Setting and Backfilling

Place the catmint plant in the hole. Check the level. The top of the root ball should be even with or slightly above the surrounding soil. Backfill with your native soil (mixed with drainage amendments if needed). Firm gently with your hands to eliminate air pockets. Do not stomp with your foot. You want firm contact, not compaction.

Watering In

Water thoroughly after planting, even if the soil feels moist. This settles the soil around roots and eliminates any remaining air gaps. Apply water slowly so it soaks in rather than running off. A gentle stream for several minutes works well.

Mulching: Yes, But Carefully

Apply a thin layer (one inch max) of gravel, crushed stone, or pine fines around the plant. Keep mulch pulled back from the crown by at least two inches. Organic mulches like wood chips or straw hold too much moisture against the stems and can cause rot. Stone mulch reflects heat, improves drainage, and looks great with the gray-green foliage.

Essential Care for Thriving Catmint Plants

Watering: Less Is More

Newly planted catmint plant needs regular water for the first four to six weeks while roots establish. Water deeply once or twice a week depending on weather. The goal is to encourage roots to chase moisture downward, creating a deep, drought-resistant system.

After the first season? You can practically put away the hose. Established catmint plant is remarkably drought tolerant. In most climates, rainfall is sufficient. Only water during extended dry spells (three weeks plus with no rain) and even then, a deep soak every two weeks is plenty.

Overwatering is the number one killer of established catmint plant. If in doubt, wait. The plant will tell you it is thirsty by looking a bit wilted in the heat of the day. If it perks up by evening, it is fine. If it stays wilted, water deeply.

Fertilizing: Just Say No

I am serious. Do not fertilize catmint plant. Not with compost, not with granular fertilizer, not with liquid feed. Rich soil creates weak, floppy growth and reduces essential oil production. The only exception is extremely sandy soil with almost no nutrients. In that case, a single light application of balanced slow-release fertilizer in early spring is the absolute maximum.

If your catmint plant looks pale or stunted, the problem is almost certainly drainage or sunlight, not nutrition. Fix the growing conditions, not the fertility.

Deadheading for Continuous Blooms

This is the secret to that months-long flower show. After the first big flush fades (usually late June to early July), shear the entire plant back by one-half to two-thirds. Use hedge shears or sharp pruners. It looks brutal, I know. But within two to three weeks, you will have a fresh mound of foliage covered in new flower buds.

If you skip this step, the plant puts energy into seed production instead of flowers. You will get a few sporadic blooms, but nothing like the second main flush. The shearing also keeps the plant compact and prevents the center from opening up and flopping.

Winter Care

In zones 4 through 8, catmint plant is fully hardy. Leave the dead foliage in place over winter. It protects the crown and provides habitat for beneficial insects. Cut it back to the ground in early spring before new growth emerges.

In zone 3, apply a loose mulch of straw or evergreen boughs after the ground freezes. This prevents freeze-thaw cycles from heaving the plant. Remove in early spring.

Container-grown catmint plant needs protection in zones 6 and colder. Move pots to an unheated garage or bury them in the ground for winter.

Pruning and Maintenance Tips

The Mid-Season Shear: Step by Step

Let me walk you through the most important maintenance task for catmint plant. Timing matters. Wait until the first flush is mostly finished. You will see spent flower spikes turning brown and seed heads forming. That is your cue.

Grab clean, sharp hedge shears or bypass pruners. Grab a handful of stems and cut straight across, removing the top half to two-thirds of the plant. Work your way around. Do not worry about being precise. Catmint plant is incredibly forgiving.

After shearing, give the plant a deep watering if the soil is dry. Within days, you will see fresh green growth emerging from the base. In two to three weeks, flower buds will appear. The second flush is often even showier than the first because the plant is larger and more established.

Spring Cleanup

In early spring, before new growth starts, cut last year’s dead stems to the ground. Use pruners or hedge shears. Be careful not to damage the emerging green shoots at the base. This is also the perfect time to divide overcrowded clumps (more on that in a moment).

Dealing with Flopping

Even with perfect conditions, tall varieties like ‘Six Hills Giant’ can flop after heavy rain or in very rich soil. Prevention is easier than correction. In early spring, when stems are 6 to 8 inches tall, insert grow-through supports (those circular grids on legs) or place a few stakes and run twine around the perimeter.

If flopping happens suddenly after bloom time after time, the variety is too tall for your conditions. Switch to a compact variety like ‘Cat’s Meow’ or ‘Junior Walker.’ They stay upright without support.

Dividing: Renewal and Free Plants

Every three to four years, catmint plant clumps develop a dead center with growth only around the edges. This is your signal to divide. Do it in early spring just as new growth appears.

Dig up the entire clump. Use a sharp spade or knife to cut it into sections, each with healthy roots and several shoots. Discard the woody, dead center. Replant the divisions at the same depth, water well, and you have just turned one plant into three or four. Share with friends or fill other garden spots.

Common Problems and Solutions

Powdery Mildew

This fungal disease appears as a white, powdery coating on leaves, usually in late summer during humid weather. It is unsightly but rarely fatal. Prevention is key: full sun, good spacing, and avoid overhead watering.

If it appears, remove badly affected leaves. Spray with a homemade solution of one tablespoon baking soda plus one teaspoon horticultural oil per gallon of water. Or use a commercial fungicide labeled for powdery mildew on ornamentals. The mid-season shear also helps by removing old foliage and improving air flow.

Root Rot

Yellowing leaves, wilting despite moist soil, and a foul smell from the root zone signal root rot. This is almost always caused by poor drainage. If caught very early, you might save the plant by improving drainage (digging it up, amending soil, replanting higher). But usually, by the time you notice, it is too late.

Prevention is everything. Plant in well-drained soil. Do not overwater. Use stone mulch. If your soil is heavy clay, grow catmint plant in raised beds or containers.

Spider Mites

These tiny pests thrive in hot, dry, dusty conditions. They cause stippled, bronzed leaves and fine webbing. A strong blast of water from the hose every few days disrupts their lifecycle. Insecticidal soap or neem oil works for heavier infestations. But honestly, a healthy catmint plant in good conditions rarely has serious mite issues.

Cats in the Garden

Some cats are attracted to catmint plant, though less intensely than to catnip. They may roll on young plants, flattening them. If this is a problem, lay chicken wire over newly planted catmint plant until it is established. Or surround it with prickly branches. Once the plant is woody at the base, cats usually lose interest.

Leggy, Sparse Growth

If your catmint plant looks stretched out with few flowers, it is almost certainly getting too little sun. Move it to a sunnier spot. If that is not possible, accept it as a foliage plant and enjoy the fragrance when you brush past it.

Harvesting and Using Your Catmint Plant

Cutting for Bouquets

Catmint plant makes a wonderful cut flower. The airy spikes add a soft, romantic touch to arrangements and last five to seven days in a vase. Cut stems in the morning when flowers are just opening. Strip lower leaves, place in cool water immediately, and change water every two days.

For dried arrangements, cut stems when flowers are fully open but before they start to fade. Hang upside down in small bundles in a dark, dry, well-ventilated space. They dry beautifully and hold their color well.

Herbal Uses

While not as potent as catnip, catmint plant leaves make a pleasant, mild mint tea. Harvest leaves in the morning after dew dries but before the day heats up. Use fresh or dry for later. Steep one tablespoon fresh leaves (one teaspoon dried) per cup of boiling water for five minutes.

Some herbalists use catmint plant tea as a gentle relaxant or digestive aid. As with any herb, start with small amounts and consult a healthcare provider if you are pregnant, nursing, or on medication.

Cat Entertainment

If you have cats, dry some leaves and stuff them into a small cloth toy or sprinkle on a scratching post. The reaction is usually milder than with catnip. Some cats love it, others ignore it. Either way, it is safe and non-addictive.

Designing with Catmint Plant

Companion Planting Ideas

Catmint plant plays well with others. Its soft gray-green foliage and lavender-blue flowers complement almost anything. Some classic pairings:

• Roses: The classic combination. Catmint plant hides rose’s bare knees, blooms at the same time, and the colors harmonize beautifully. Plus, it may help deter rose pests.
• Salvia: Similar spikes, different colors. Purple, pink, or red salvia with blue catmint plant is a pollinator paradise.
• Yarrow: Flat-topped yarrow flowers contrast with catmint plant’s spikes. Both love sun and lean soil.
• Ornamental grasses: The fine texture of grasses like fountain grass or blue fescue sets off catmint plant’s mounded form.
• Lavender: Mediterranean soulmates. Same needs, complementary colors and fragrances.
• Echinacea: Coneflowers bloom later, extending the season. The bold daisy flowers contrast with catmint plant’s haze of blue.

Garden Styles

Cottage garden: Let catmint plant spill over paths and soften edges. Mix with foxgloves, delphiniums, and old roses.

Xeric/Water-wise garden: Catmint plant is a star in dry gardens. Pair with sedum, Russian sage, agastache, and native grasses.

Pollinator garden: Plant in drifts of three, five, or seven for maximum impact. Add milkweed, bee balm, and asters for a season-long buffet.

Rock garden: Tuck compact varieties into crevices or let them cascade over rocks. The drainage is perfect.

Container garden: ‘Cat’s Meow’ and ‘Junior Walker’ thrive in pots. Use a gritty mix and a container with excellent drainage. They are stunning spilling over the edges of a large terra cotta pot.

Propagation: Growing More Catmint Plant

Division

As mentioned, division is the easiest and most reliable method. Early spring, every three to four years. You get mature plants that bloom the same year.

Softwood Cuttings

In late spring to early summer, take 4 to 6 inch cuttings from non-flowering stems. Remove lower leaves, dip in rooting hormone (optional but helpful), and stick in a pot of moist perlite or sand. Cover with a plastic bag to maintain humidity. Place in bright, indirect light. Roots form in three to four weeks. Pot up and grow on until fall planting.

Seed

Most named catmint plant varieties are sterile hybrids and do not come true from seed. If you collect seed from ‘Walker’s Low,’ the seedlings will be variable. Species types like Nepeta racemosa or Nepeta sibirica do grow from seed. Sow indoors 8 to 10 weeks before last frost, barely covering seeds. They need light to germinate. Transplant after frost.

Troubleshooting: Why Is My Catmint Plant Not Blooming?

This is the most common question I get. Let me run through the checklist:

• Not enough sun: Needs six-plus hours direct sun. This is the number one reason.
• Too much fertilizer: Rich soil = leaves, not flowers. Stop feeding.
• Too much water: Constant moisture encourages vegetative growth over flowering.
• Wrong time of year: Some varieties bloom late spring to early summer. Others start later. Know your variety.
• Plant is too young: First-year plants may bloom lightly. Year two is the real show.
• Needs division: Old, woody clumps with dead centers bloom poorly. Divide in spring.
• Pruned at wrong time: If you cut back in late spring, you removed flower buds. Only shear AFTER first bloom.

Fix the conditions, and the flowers will follow. Catmint plant wants to bloom. It is in its nature.

Catmint Plant vs. Catnip vs. Russian Sage

These three get confused often. Here is the quick breakdown:

Catmint plant (Nepeta x faassenii and hybrids): Ornamental perennial. Sterile hybrids. Long bloom. Gray-green foliage. Lavender-blue flowers. Mounding habit. Cats like it moderately.

Catnip (Nepeta cataria): Herbaceous perennial. Self-seeds aggressively. Weedy appearance. White flowers with purple spots. Cats go crazy for it. Grow in a container unless you want it everywhere.

Russian sage (Perovskia atriplicifolia): Woody perennial (subshrub). Taller (3 to 5 feet). Silvery foliage. Airy lavender-blue flower spikes. Blooms mid to late summer. More upright, less mounding. Not attractive to cats.

All three love sun and hate wet feet. But they play different roles in the garden.

Seasonal Care Calendar

Early Spring (March to April)

• Cut back dead foliage to ground
• Divide overcrowded clumps
• Apply thin gravel mulch if needed
• Install supports for tall varieties

Late Spring (May to June)

• First flush of bloom begins
• Water new plantings regularly
• Watch for powdery mildew in humid weather
• Take softwood cuttings if desired

Early Summer (June to July)

• First bloom fades
• Shear plants back by half to two-thirds
• Water deeply after shearing if dry
• Harvest stems for bouquets

Mid to Late Summer (July to September)

• Second flush of bloom
• Deadhead spent flowers if desired (not required)
• Monitor for spider mites in hot, dry weather
• Enjoy the pollinator show

Fall (October to November)

• Stop watering established plants
• Leave foliage standing for winter protection
• Plant new catmint plant in zones 6+
• Move container plants to protected spot in cold zones

Winter (December to February)

• No care needed in most zones
• Check container plants monthly, water lightly if bone dry
• Plan next year’s garden additions
• Order new varieties for spring planting

Conclusion

Learning how to grow catmint plant is one of the most rewarding gardening skills you can acquire. This tough, beautiful, generous perennial asks so little and gives so much. Months of blooms. Fragrant foliage. Pollinator heaven. Deer resistance. Drought tolerance. And that wonderful relaxed look that makes a garden feel lived-in and loved.

Start with one plant in a sunny, well-drained spot. Give it lean soil, minimal water once established, and that crucial mid-season haircut. Before you know it, you will be dividing clumps to share with friends, tucking it into every sunny corner, and wondering how you ever gardened without it.

Your catmint plant journey starts today. Pick a variety, find a sunny spot, and plant with confidence. The bees will thank you. The butterflies will thank you. And every time you brush past those fragrant gray-green leaves, you will thank yourself for making such a smart, beautiful choice.

Happy growing!

Frequently Asked Questions

Does catmint plant spread aggressively?

No, the popular hybrid catmint plant varieties are sterile and do not self-seed. They spread slowly by widening clumps, which can be divided every three to four years. Unlike true catnip, they stay exactly where you plant them.

Is catmint plant deer resistant?

Yes, catmint plant is highly deer and rabbit resistant. The strong minty fragrance and fuzzy foliage deter browsing animals. It is an excellent choice for unfenced gardens in areas with high deer pressure.

How long does catmint plant live?

With proper conditions (full sun, excellent drainage, lean soil), catmint plant can live 5 to 10 years or more. Regular division every three to four years rejuvenates plants and extends their lifespan indefinitely.

Can catmint plant tolerate clay soil?

Only if drainage is improved. Heavy clay holds too much moisture and causes root rot. Amend clay with coarse sand, fine gravel, or expanded shale, or plant in raised beds or berms. Container growing is another good option for clay soils.

When does catmint plant bloom?

Most varieties begin blooming in late spring (May to June) and continue for 4 to 6 weeks. After shearing, a second flush appears in mid to late summer and often continues until frost, giving 3+ months of total bloom time.

Is catmint plant safe for pets?

Yes, catmint plant is non-toxic to dogs and cats. Some cats may roll on or nibble the foliage, but the effect is much milder than with catnip. It is safe to grow in pet-friendly gardens.