Platt's Black Brass Buttons
Cotula leptinella 'Platt's Black'
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Groundcover
Height
2 inches
Width
12 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7
Water
Medium
Humidity
Moderate
Lifespan
Perennial
Native To
New Zealand
Toxicity
Non-toxic
The Story
Plant Bio
A mat-forming, creeping perennial with finely-divided, fern-like foliage. Spreads by rhizomes to form a dense groundcover. Produces small, button-like, petal-less flower heads in summer. Distinguished by its striking, bronze-black, feathery foliage that intensifies in color in full sun. Creates a unique, dark-colored carpet effect in the garden.
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck seeds into well-draining soil in early spring.
- Mist cuttings regularly to maintain humidity and promote root growth.
- Ensure the plant receives full sun for optimal growth.
- Water sparingly once established, avoiding waterlogged soil.
- Fertilize with a balanced, low-nitrogen fertilizer monthly during the growing season.
- Divide clumps in early spring or fall to propagate.
Pro Tip
Use well-draining sandy soil and avoid overwatering to prevent root rot.
Keep It Thriving
Care Guide
Do
- Provide full sun for healthy foliage ☀️
- Water moderately, keeping soil moist but not soggy 💧
- Fertilize monthly during active growth 🌱
- Divide in spring or fall to rejuvenate the plant
- Prune lightly to maintain shape
Don't
- Avoid overwatering to prevent root rot ❌
- Do not plant in heavy clay soil without amendment
- Refrain from fertilizing in late fall
- Avoid excessive pruning during dormancy
- Do not expose to frost
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Fertilize | ||||||||||||
| Plant | ||||||||||||
| Spring Cleanup |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Platt's Black Brass Buttons questions
What zones can Platt's Black Brass Buttons grow in?
Platt's Black Brass Buttons is hardy in USDA Zones 4–7. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Platt's Black Brass Buttons deer resistant?
Yes — Platt's Black Brass Buttons is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Platt's Black Brass Buttons bloom?
Platt's Black Brass Buttons typically blooms in late spring to early summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Platt's Black Brass Buttons need full sun?
Platt's Black Brass Buttons does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
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Grow Platt's Black Brass Buttons with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
