Biennial or short-lived perennial that is winter hardy to USDA Zones 3-7. It blooms in the first year from seed planted in early spring, and is accordingly often grown as an annual. It is easily grown in average, medium moisture, well-drained soils in full sun.
Common name: Rudbeckia hirta Prairie Sun
Bloom time: June to frost
Height: 2.50 to 3.00 feet
Difficulty level: easy to grow
Planting & Care
Plants prefer a near-neutral pH range of 5.5–7.0. A pH of 6.5 is just about right for most home gardens (slightly acidic to neutral).An accurate soil test will tell you where your pH currently stands. Acidic (sour) soil is counteracted by applying finely ground limestone, and alkaline (sweet) soil is treated with ground sulfur.
Sunlight: Full sun
Soil: well-drained soil
Temprature: 32°e and 18°e
Fertilizer: Apply any organic fertilizer
- Plants do not thrive in Zones 9 to 10 without a period of refrigeration; they need a cold, dormant period.
- Select a site with soil that drains well.
- How can you tell? After a good rain, find a spot that is the first to dry out.
- Water trapped beneath the scales may rot the bulb, so a well-drained site is essential.
Harvesting: 5-7 days
- Diligently water your plants.
- Soak the entire root zone at least twice a week in dry summer weather.
- Avoid frequent shallow sprinklings, which won’t reach the deeper roots and may encourage fungus.
- Plants do best with 90 inches of rain per year, so unless you live in a rain forest, water regularly.
Borders. Annual beds. Cottage gardens. Wild gardens. Meadows. Groups or mass plantings. Good cut flower.
No serious insect or disease problems. Susceptible to powdery mildew. Watch for slugs and snails on young plants. Can self-seed freely.
Tuesday, 17 March 2020
Monday, 02 March 2020
Friday, 14 February 2020
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