Description

Rubenza Cosmos (Cosmos bipinnatus) enchants with 3″ blooms that transition from deep wine-red to dusky rose, creating a dynamic display throughout the season. A Fleuroselect Novelty Award winner, this sun-loving annual grows 24″–32″ tall and thrives with minimal care, making it perfect for adding vibrant color to garden beds, borders, or floral arrangements. Highly attractive to hummingbirds and pollinators, Rubenza Cosmos is also drought-tolerant, pairing beautifully with white flowers and silver-foliage plants for stunning garden contrasts.

Botanical Name: Cosmos bipinnatus
Family: Asteraceae
Native: Mexico and Arizona
Hardiness: Annual
Plant Dimensions: 24″–32″ tall, about 28″ wide
Variety Information: Flowers up to 3″ start out deep wine-red, turning to rose as they age.
Exposure: Full sun
Bloom Period: Summer to frost
Attributes: Attracts Hummingbirds, Attracts Pollinators, Cut Flower, Drought Tolerant

When to Sow Outside: RECOMMENDED. 1 to 2 weeks after your average last frost date, and when soil temperature is at least 60°F.
When to Start Inside: 4 to 6 weeks before your average last frost date.
Days to Emerge: 5–10 Days
Seed Depth: Barely cover
Seed Spacing: A group of 3 seeds every 12″
Thinning: When 1″–2″ tall, thin to 1 every 12″

29 seeds.