Are sunflowers perennial plants?
Written by
Kiana Okafor
Reviewed by
Prof. Samuel Fitzgerald, Ph.D.The vast majority of sunflowers are annual plants, which means they only live for one growing season. There are perennial sunflowers, however, such as 'Lemon Queen', but they require very specific growing conditions. I have even helped some gardeners get established with these rarities using a winter mulch application and selective pruning. To ensure you are not disappointed, check the seed or plant label to be sure it is labeled as 'perennial'.
Soil & Site
- pH: 6.0-7.0
- Drainage: Add gravel to clay soils
- Sun: 6+ hours daily
Winter Care
- Mulch: 4 inches straw after first frost
- Pruning: Cut stems to 6 inches post-frost
- Protection: Burlap wraps in zones 4-5
Patience is key for perennials. It's been two years since my neighbor's ‘Maximilian' finally flowered and it now reseeds on its own. I divide the roots every three springs with a spade because it's a good way to start new plants and also gives a little back to friends. More drought tolerant each year.
Cold Zones (3-5)
- Plant: Late spring after frost risk
- Water: Reduce after September
- Companions: Russian sage for windbreaks
Warm Zones (8-10)
- Plant: Fall for spring blooms
- Shade: Afternoon protection in summer
- Pests: Apply neem oil monthly
Perennial sunflowers provide a dependable source of seed collection. My patch of ‘Lemon Queen' has been self-seeding for six years now. I harvest seeds in late summer, after their heads have drooped a bit, and dry them in mesh bags. I store them in jars with silica packets. I always share seeds with others so the glory of golden months can be spread.
Read the full article: How to Plant Sunflowers: Expert Guide for Vibrant Blooms
