Height:

32.0-36.0 Inches

Spread:

36.0-42.0 Inches

Hardiness Zones:

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:

Low Water Needs Average Water Needs

Soil Quality:

Average Soil Quality

Soil Chemistry:

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

Bloomtime:

Midsummer Late Summer Early Fall Long Blooming

Attracts Wings:

Attracts Butterflies Attracts Songbirds Bee Friendly

Critter Resistant:

Deer Resistant Rabbit Resistant

Seasonal Interest:

Dried Seed Heads Fall Color

Growth Rate:

Medium

Garden Style:

Patio Container Cottage Eclectic Prairie Rain Garden

Other Features:

Border Plant Container Cut Flower Easy To Grow Mass Planting

Origin:

Native to North America

Rudbeckias like full sun, but they also will do well in partial shade. Plant them in well-drained, not overly rich soil. Remove spent flowers in order to stimulate continuous bloom.

Growing Temperature:

65-70° F days
60-65° F nights

Holding Temperature:

50-60° F

Soil PH:

5.8-6.5

EC (What is EC?):

1.5-2.0 pour through method

Fertility:

Feed with a constant liquid fertilization program at rates of 75-150 ppm nitrogen with every irrigation.

For Controlled Release or Slow Release Fertilizer, see your preferred supplier for recommended rates for incorporation or top dressing, as it varies by fertilizer.

Vernalization:

Not required but providing 8-10 weeks of cold is beneficial to increase bud count and uniformity.

Pests & Diseases:

Aphids, sawflies, whiteflies (greenhouse), thrips, beetles, plant bugs, stalk borers, aster leafhopper.

Rot (Sclerotium), leaf spots, bacterial blight (Pseudomonas, Xanthomonas), Botrytis blight, aster yellows, downy mildew.

Potting & Timing:

Rudbeckia can be planted any time throughout the growing season.

Moisture:

For potting soil use professional planting media.
Requires average to moderate moisture. Water as needed when the plants are young and becoming established. Once they are large, they will require more frequent irrigations, as they will dry out rather quickly.
When irrigation is needed, water them thoroughly, ensuring the entire growing medium is wet or nearly saturated. It is best to allow growing medium to dry out slightly between irrigations.

Planting Level:

Place crown just below soil surface, plugs even with soil surface.

PGRs/Pinching:

Daminozide (B-Nine/Dazide) at 2000 ppm or uniconazole (Sumagic/Concise) at 3-5 ppm are effective.

Growth regulator rates are suggestions but may vary due to time of year, region and water quality. Trialing is always recommended before applying to an entire crop.

Lighting:

Requires long days to flower. Grow under high light levels for best results.