Petunia
flower
Deadhead grandifloras every few days for continuous bloom. Wave and Supertunia types are self-cleaning and require no deadheading. Fertilize every 2 weeks for best performance.
At a glance
- USDA Zones
- 3–11
- Sun
- Full sun (6+ hrs)
- Water
- Medium — water when top inch of soil is dry
- Soil
- Loam, sandy
- pH
- Neutral
- Spacing
- 12 in. between plants
- Per square foot
- 1 plant per square
Planting & harvest windows
Northern Hemisphere timing. Adjust ±4–6 weeks based on your last/first frost dates.
| Activity | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Plant | ||||||||||||
| Harvest |
Plant Harvest
Good companions
Recommended varieties
- Waveboth
Spreading ground-cover type — self-cleaning, no deadheading needed.
- Supertuniaboth
Self-cleaning, vigorous, and available in a huge color range.
- Grandifloraboth
Classic large single flowers — most fragrant type.
Add Petunia to your raised bed — the planner handles spacing and companion warnings automatically.
Open the planner →