84 – 105 days. Indian Summer rudbeckia seeds grow a seasonal spin to one of our country's most timeless, familiar, and award-winning blooms. Indian Summer has a wildflower habit and will thrive effortlessly if given space and plenty of sun. Indian Summer rudbeckia is an AAS Flower Winner and Fleuroselect Novelty Winner for being “a rapidly growing annual” with “huge blooms 6 – 9” across and makes a wonderful sunflower-like cut.” Indian Summer rudbeckia seeds are known to tolerate gardens prone to heat and drought and are an ideal grow for kids or novice gardeners. 1000 seeds.
Growing Indian Summer Rudbeckia Garden Seeds
- Taxonomy: Rudbeckia hirta
- Seed Type: Annual
- Sow Indoors or Outdoors: Indian Summer rudbeckia has a wildflower hardiness to it and can be sown directly just like wildflower or, for container growth, begin seeds indoors 8 – 10 weeks before the final frost. For direct broadcasting, blend rudbeckia seeds with sand to increase visibility and broadcast the mix over a 10-square foot area and evenly rake and lightly tamp.
- Days to Maturity: 84 - 105 days
- Hardiness Zone: 3 - 8
- Planting Depth: Plant 3 – 4 seeds 1/8” deep or broadcast directly
- Plant Spacing: 24”
- Growth Habit: 24 – 36” tall bushy upright 18 – 24” wide with enormous 6 – 9” blooms
- Soil Preference: Average, medium moisture, well-drained
- Light Preference: Full sun
- Diseases/Pests/Troubleshooting: Indian Summer can be susceptible to downy and powdery mildew. Cut back spent foliage, leaves, and blooms after flowering to prolong vitality into the fall. No serious pests or diseases, but monitor for slugs and snails on young plants.
- Color: Golden yellow petals around a warm mahogany center
Indian Summer rudbeckia has a wildflower hardiness to it and can be broadcasted directly just like wildflower. But for indoor or container growth, begin Indian Summer rudbeckia seeds indoors 8 – 10 weeks before the final frost. For direct broadcasting, blend Indian Summer seeds with sand to increase visibility and broadcast the mix over a 10-square foot area and evenly rake and lightly tamp. If sowing traditionally, plant 3 – 4 Indian Summer rudbeckia seeds 1/8” deep and 18 – 24” apart in moist, organically rich, and well-drained soil in full sun. Indian Summer can be susceptible to downy and powdery mildew and cut back spent foliage, leaves, and blooms after flowering to prolong into the fall. Rudbeckias have no serious pests or diseases, but monitor for slugs and snails on young plants. Indian Summer rudbeckia seeds mature in 84 – 105 days as 24 – 36” tall bushy uprights 18 – 24” wide with enormous 6 – 9” golden yellow blooms.
Indian Summer rudbeckia is a 1995 All-American Selections Flower Winner and 1993 Fleuroselect Novelty Winner. Indian Summer rudbeckia is noted by AAS judges as being “a rapidly growing annual” with “huge blooms 6 – 9” across and makes a wonderful ‘sunflower’ like cut bouquets.” Fleuroselect judges also noted Indian Summer rudbeckia for its “extremely large flower heads.”