213 saves
Petunia
We track 42 varieties; the ones most used by real gardeners.
The 24 most-saved Petunia varieties
See all 42 Petunia varieties →Search this genus →
Species of Petunia
Each one is a parent of the varieties above.
Track your Petunia in Sow
Save the Petunia you grow and get care reminders timed to your zone.
How to grow Petunia
Whats common across all Petunia varieties in our catalog — drawn from the care records of the 40 most-grown of them.
The Petunia year
- FertilizeApril–September98% of varieties
Feed every 2-4 weeks with balanced liquid fertilizer
- PruneJuly70% of varieties
Cut back leggy stems by 1/3 in mid-summer to rejuvenate growth
- PlantApril and May68% of varieties
Plant transplants after all danger of frost has passed
- Pinch TipsApril–June55% of varieties
Pinch young plants early to promote bushier growth
- DeadheadMay–September53% of varieties
Remove spent or faded blooms to prolong flowering
Do
- Water regularly to keep soil moist 🌱
- Pinch back to promote bushiness
- Water consistently to keep soil moist 🌱
- Pinch back to encourage bushiness
- Deadhead to encourage more blooms
Avoid
- Avoid overwatering to prevent root rot ❌
- Overwater to prevent root rot ❌
- Allow soil to dry out completely between waterings ❌
- Don’t let soil dry out completely
What goes wrong with Petunia
| Problem | What you'll see | What to do |
|---|---|---|
| Aphids | Sticky residue and distorted leaves | Apply insecticidal soap or neem oil |
| Spider mites | Fine webbing on leaves | Use insecticidal soap or horticultural oil |
| Whiteflies | White flying insects on undersides of leaves | Use yellow sticky traps and insecticidal soap |
| Spider Mites | Fine webbing on leaves | Use insecticidal soap and increase humidity |
| Root rot | Wilting and yellowing leaves | Ensure proper drainage and reduce watering |
| Botrytis blight | Gray mold on flowers and foliage | Use fungicide and improve air circulation |
| Powdery mildew | White powder on leaves | Improve air circulation and apply fungicide |
Making more Petunia
Cuttings
- Take 4-inch cuttings in late spring.
- Dip in rooting hormone and plant in moist soil.
- Keep in bright, indirect light for 4-6 weeks.
Seed
- Tuck seeds into moist soil in early spring.
- Maintain consistent moisture for germination (7-14 days).
Petunia questions
How many types of Petunia are there?
The Sow catalog tracks 42 distinct Petunia varieties. The most popular — ranked by 213 real gardeners — are shown first above.
What zones does Petunia grow in?
Across its varieties, Petunia covers USDA Zones 4–10. Individual varieties differ — each plant page lists its exact range, and Sow filters the catalog to your zone automatically.
When does Petunia bloom?
Most Petunia varieties bloom in mid-summer, early summer, late spring to first frost. Staggering early, mid, and late varieties extends the genus's season in one bed.
Which Petunia 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.