Also known as Foamflower · 654 saves
Tiarella
Tiarella, the genus most gardeners know as foamflower. We track 16 varieties; the ones most used by real gardeners.
The 16 most-saved Tiarella varieties
2 species of Tiarella
Each one is a parent of the varieties above.
Track your Tiarella in Sow
Save the Tiarella you grow and get care reminders timed to your zone.
How to grow Tiarella
Whats common across all Tiarella varieties in our catalog — drawn from the care records of the 16 most-grown of them.
The Tiarella year
- DivideMarch and September100% of varieties
Divide congested clumps every 3-5 years to maintain vigor
- Spring CleanupFebruary and March94% of varieties
Remove any tattered or brown winter foliage before new growth starts
- MulchMarch88% of varieties
Apply 1-2 inches of organic mulch to retain moisture in the shade
- DeadheadApril and May56% of varieties
Cut spent flower spikes back to the base to tidy appearance
- PlantMarch, April, September and October50% of varieties
Plant in spring or fall in humus-rich, consistently moist soil.
- FertilizeMarch44% of varieties
Apply a light layer of balanced organic fertilizer in early spring
Do
- Water regularly to keep soil moist 🌱
- Mulch to conserve moisture and regulate soil temperature
- Mulch to retain moisture and regulate soil temperature
- Water regularly to keep soil evenly moist 🌱
- Water regularly to keep soil moist but not waterlogged 🌱
Avoid
- Don’t let soil dry out completely
- Avoid overwatering to prevent root rot ❌
- Avoid dry, sunny locations ❌
- Avoid overwatering, which can lead to root rot ❌
What goes wrong with Tiarella
| Problem | What you'll see | What to do |
|---|---|---|
| Aphids | Sticky residue and distorted leaves | Spray with neem oil or insecticidal soap |
| Slugs | Chewed edges on foliage | Use organic slug bait or handpick during evening hours |
| Powdery mildew | White powdery spots on leaves | Improve air circulation and apply fungicide if needed |
| Powdery Mildew | White powdery coating on leaves | Improve air circulation and apply organic fungicide |
| Root Rot | Wilting and blackened roots | Ensure proper drainage and reduce watering frequency |
Making more Tiarella
Division
- Divide mature clumps in early spring or fall.
- Replant divisions at same depth and water thoroughly.
Seed
- Tuck seeds into moist soil in early spring.
- Keep soil consistently moist for germination, which takes 2-3 weeks.
Tiarella questions
How many types of Tiarella are there?
The Sow catalog tracks 16 distinct Tiarella varieties. The most popular — ranked by 654 real gardeners — are shown first above.
What zones does Tiarella grow in?
Across its varieties, Tiarella covers USDA Zones 4–9. Individual varieties differ — each plant page lists its exact range, and Sow filters the catalog to your zone automatically.
When does Tiarella bloom?
Most Tiarella varieties bloom in early spring, late spring, mid to late spring. Staggering early, mid, and late varieties extends the genus's season in one bed.
Which Tiarella should I choose?
Start from the most-saved varieties above — popularity across thousands of gardens is a strong signal of reliability — then filter by your zone and sun. In the Sow app you can preview any of them in a photo of your actual yard before you buy.