Height:

18.0-24.0 Inches

Spread:

16.0-20.0 Inches

Hardiness Zones:

3,4,5,6,7,8,9

Flower Color:

Yellow/Gold Shades

Foliage Color:

Green shades

Sunlight:

Full Sun (> 6 hrs. Direct Sun) Part Shade (4-6 hrs. Direct Sun)

Water Requirements:

Average Water Needs

Soil Quality:

Average Soil Quality

Soil Chemistry:

Acidic Soil (pH < 7.0) Neutral Soil (pH = 7.0)

Bloomtime:

Midsummer Late Summer

Attracts Wings:

Attracts Butterflies Bee Friendly

Growth Rate:

Medium

Garden Style:

Cottage Eclectic Prairie

Other Features:

Border Plant Cut Flower Drought Tolerant Easy To Grow Mass Planting Focal Point

Origin:

Native to North America

Heliopsis can be grown in either full sun or part shade, but it performs much better in full sun. Soil of average fertility is preferable. When grown in moist, rich soil, it tends to need staking. Growth will be strongest in soil with average fertility and moisture.

Deadheading spent flower heads will extend the flowering time and prevent self-seeding.

Growing Temperature:

70-75° F

Holding Temperature:

60-70° F

Soil PH:

5.8-6.4

EC (What is EC?):

2.0-3.0 pour through method

Fertility:

Feed at 100-150 ppm N at each watering.

Vernalization:

Not required.

Pests & Diseases:

Aphids, leafminers, thrips and whiteflies are the most common pests. The most common diseases of false sunflower are leaf spots (Ascochyta, Cercospora, Phyllosticta and Septoria), rust and powdery mildew.

Potting & Timing:

Plant only in warmer conditions. Cool conditions will cause growth to stall out.
Bare root provides a fuller looking plant and is good for larger containers such as premium 1 gallon or 2 gallon sizes. Plugs work well for trade gallon containers.

Moisture:

Moderate moisture.

Planting Level:

Plant crown even with soil line.

PGRs/Pinching:

Pinch plants 2 weeks after transplanting to increase lateral branching.
Apply daminozide (B-Nine or Dazide) at 2,500 ppm if needed shortly after pinching. Uniconazole (Sumagic/Concise) is also effective at controlling elongation, at rates of 5-10 ppm.

Lighting:

Heliopsis require high light levels and long days to flower.