Sunflower
warm-season crop
At a glance
| Suitable zone groups | All four zone groups (3-4, 5-6, 7-8, 9-10), as a warm-season annual |
|---|---|
| Planting window | See the guide text below, in general terms relative to your last spring frost |
| Sun | Full sun |
| Soil | Well-draining, fertile soil |
| Watering | Regular watering |
About this plant
Sunflower adds height and cheerful blooms to the garden. Grow it as a warm-season annual in all four zone groups (3-4, 5-6, 7-8, 9-10), choosing a full-sun location.
Plant in well-draining, fertile soil and provide regular watering. Select a variety that fits your space, since compact and tall types have different support needs.
Common beginner failures and fixes
- Tall stems leaning in wind: Add a sturdy stake and secure the stem loosely.
- Weak growth in shade: Choose a full-sun planting position.
- Crowded seedlings: Thin plants according to the variety's spacing guidance.
- Soil drying out unnoticed: Check moisture regularly and water the root area consistently.
Beginner checklist
- Grow as a warm-season annual in your zone group.
- Choose a variety suited to your available space.
- Plant in full sun and well-draining, fertile soil.
- Provide regular watering.
- Support tall plants where needed.
Zone groups and planting windows here are general guidance. Confirm your own zone and last frost date locally before planting.