Also known as Rocktrumpet · 21 saves
Mandevilla
Mandevilla, the genus most gardeners know as rocktrumpet. We track 3 varieties; the ones most used by real gardeners.
The 3 most-saved Mandevilla varieties
2 species of Mandevilla
Each one is a parent of the varieties above.
Track your Mandevilla in Sow
Save the Mandevilla you grow and get care reminders timed to your zone.
How to grow Mandevilla
Whats common across all Mandevilla varieties in our catalog — drawn from the care records of the 3 most-grown of them.
The Mandevilla year
- FertilizeMay–September100% of varieties
Feed every 2-4 weeks with a balanced liquid fertilizer
- Winter PrepOctober and November100% of varieties
Cut back stems and bring indoors before the first frost
- PruneMarch67% of varieties
Prune back hard in late winter to encourage new, flowering growth.
Do
- Provide full sun for optimal flowering 🌞
- Keep soil moist but not waterlogged 💧
- Prune regularly to maintain shape and health
- Feed monthly during the growing season
- Support with a trellis to showcase its climbing habit
Avoid
- Avoid overwatering to prevent root rot ❌
- Don’t let soil dry out completely
- Avoid harsh pruning during late fall or winter
- Don’t fertilize with high nitrogen fertilizers which promote foliage over flowers
What goes wrong with Mandevilla
| 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 apply insecticidal soap |
| Spider mites | Stippled, yellowing leaves and fine webbing under foliage, especially in dry indoor winter storage. | Increase humidity, use insecticidal soap, or apply horticultural oil. |
| Whiteflies and mealybugs | Sticky honeydew residue, black sooty mold, and white cottony clusters on stems or leaf axils. | Treat with systemic insecticides, neem oil, or insecticidal soap. |
| Root Rot | Wilting and yellowing leaves, mushy roots | Ensure well-draining soil and reduce watering |
| Powdery Mildew | White powder on leaves | Apply fungicide and improve air circulation |
| Root rot | Wilting, yellowing leaves, mushy dark roots, and sudden plant collapse due to overwatering. | Improve soil drainage, reduce watering frequency, and discard severely affected plants. |
Making more Mandevilla
Cuttings
- Take 4-6 inch softwood cuttings in spring
- Remove lower leaves and dip in rooting hormone
- Plant in moist potting mix and cover with plastic
- Keep in warm, bright location for 6 weeks until roots develop
Softwood Cuttings
- Take semi-ripe or softwood tip cuttings in late spring or summer.
- Apply rooting hormone to the cut base of the stem.
- Insert the cuttings into a well-aerated, moist propagation medium.
- Provide bottom heat and maintain high humidity until roots establish.
Mandevilla questions
How many types of Mandevilla are there?
The Sow catalog tracks 3 distinct Mandevilla varieties. The most popular — ranked by 21 real gardeners — are shown first above.
What zones does Mandevilla grow in?
Across its varieties, Mandevilla 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 Mandevilla bloom?
Most Mandevilla varieties bloom in late spring to fall, mid-summer, late spring. Staggering early, mid, and late varieties extends the genus's season in one bed.
Which Mandevilla 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.