Western Sunflower

Western Sunflower Care

Helianthus Laetiflorus

What is the plant

Helianthus laetiflorus blooms. Aptly named, Showy Sunflower (Helianthus laetiflorus) is one of the largest and showiest of the native sunflowers. The high contrast between the bright yellow petals and dark centers give this sunflower a distinctive appearance.

Could be very invasive if not carefully controlled.

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Humidity

Normal

Lighting

Part Sun

Temperature

-34°C - 10°C

Hardiness zone

3 - 9

Difficulty

Easy

Invasive

Weed

How to Care for the Plant

Water
Although false sunflowers can tolerate drought, they do best with regular watering to keep the soil moderately moist. So if you've had a stretch without rainfall and the soil is dry, be sure to water your plants.
Fertilizer
You likely won't have to fertilize your plants unless you have very poor soil. Rich soil can cause a lot of leggy stem growth on false sunflowers. So go easy on the organic matter and fertilizer.
Sunlight
These plants prefer full sun to grow and bloom their best. They can tolerate light shade, though blooming might not be as vigorous and the stems might be floppy and require support. Plus, they can get leggy if they don't get at least four to five hours of sun per day.

Disease diagnosis

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Soil
False sunflowers can thrive in a variety of soil types. They can even tolerate dry, poor, rocky, sandy, and clay soils. However, they prefer average, well-draining soil with a neutral soil pH for optimal growth.
Temperature
False sunflowers are cold-hardy perennials that will come back year after year in northern climates up to USDA growing zone 3. Some varieties also have good heat tolerance, making them ideal for the southern end of the plant's growing zones. These plants also aren't overly picky about humidity.
Popularity
142 people already have this plant 47 people have added this plant to their wishlists