Also known as Joseph's Coat · 1 saves
Alternanthera
Alternanthera, the genus most gardeners know as joseph's coat. We track 3 varieties; the ones most used by real gardeners.
The 3 most-saved Alternanthera varieties
Track your Alternanthera in Sow
Save the Alternanthera you grow and get care reminders timed to your zone.
How to grow Alternanthera
Whats common across all Alternanthera varieties in our catalog — drawn from the care records of the 3 most-grown of them.
The Alternanthera year
- FertilizeJune–September100% of varieties
Apply balanced liquid fertilizer monthly
- PropagateSeptember and October100% of varieties
Take cuttings to overwinter indoors before first frost
- Pinch TipsJune and July67% of varieties
Pinch growing tips to encourage dense, bushy growth
- PlantMay and June67% of varieties
Plant outdoors after all danger of frost is past
Do
- Water regularly to keep soil moist but not soggy 🌱
- Provide bright, indirect sunlight for vibrant foliage
- Pinch back stems to encourage bushiness
- Water consistently during dry spells 💧
- Prune lightly to maintain shape ✂️
Avoid
- Avoid overwatering to prevent root rot ❌
- Don’t place in direct harsh sunlight which can scorch leaves
- Do not ignore pests—inspect regularly
- Overwater to avoid root rot ❌
What goes wrong with Alternanthera
| Problem | What you'll see | What to do |
|---|---|---|
| Aphids | Sticky residue and distorted leaves | Spray with insecticidal soap or neem oil |
| Spider Mites | Fine webbing and speckled leaves | Increase humidity and use insecticidal soap |
| Spider mites | Stippled leaves and fine webbing under hot, dry conditions. | Apply miticide or horticultural oil to leaf surfaces. |
| Mealybugs and Scale | Cottony masses or raised bumps on stems. | Treat with systemic insecticides or horticultural oils. |
| Root Rot | Wilting and yellowing leaves | Improve drainage and reduce watering |
| Root rot | Wilting, yellowing leaves | Improve drainage, reduce watering |
| Root rot and Stem rot | Mushy stem bases and sudden wilting from overwatering. | Improve soil drainage and reduce irrigation frequency. |
Making more Alternanthera
Cuttings
- Select healthy stems and cut 4-6 inch sections
- Remove lower leaves and dip in rooting hormone
- Plant in moist, well-draining soil
- Maintain high humidity and indirect light
- Roots develop in approximately 4-6 weeks
Division
- Dig up mature plants in early spring
- Separate into smaller clumps
- Replant immediately in prepared soil
Alternanthera questions
How many types of Alternanthera are there?
The Sow catalog tracks 3 distinct Alternanthera varieties. The most popular — ranked by 1 real gardeners — are shown first above.
What zones does Alternanthera grow in?
Across its varieties, Alternanthera covers USDA Zones 9–10. Individual varieties differ — each plant page lists its exact range, and Sow filters the catalog to your zone automatically.
When does Alternanthera bloom?
Most Alternanthera varieties bloom in mid-summer, summer. Staggering early, mid, and late varieties extends the genus's season in one bed.
Which Alternanthera 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.