Cosmos – Sulphur Dwarf Formula Mix

The Sulphur Dwarf Formula Mix features compact, vibrant blooms of Cosmos sulphureus, thriving in hot, arid climates. Native to Central America, this species is adapted to withstand temperatures of 100°F (38°C) and above.

Compared to Cosmos bipinnatus, Cosmos sulphureus has smaller, more intense-colored flowers and tends to bloom later in the growing season, adding a splash of color when other flowers may be fading. In warm, dry regions, this variety can be planted in the fall for extended bloom periods. However, in cooler, moist climates, it is best to sow seeds in the spring after the soil has warmed, as these seeds require heat to germinate and may rot if planted too early in cold, wet soil.

This mix is especially suited to gardeners seeking low-maintenance, drought-tolerant plants. The Cosmos sulphureus performs best in moderately infertile, well-drained soil, as too much fertilizer can cause rapid, weak growth that may flop over. Once established, it requires minimal care and will flourish even when neglected.

In addition to their bright, cheerful flowers, these cosmos attract birds and beneficial pollinators like bees and butterflies, enhancing garden biodiversity. They are also excellent for use as cut flowers, providing long-lasting color indoors.

This dwarf variety is ideal for containers, borders, and wildflower gardens where space is limited but a burst of warm color is desired.

**For larger quantities than listed for sale please contact us for availability and pricing.

The broadcast rate for seeding is 70 – 87.5 pounds per acre.

The seed drill rate for seeding in rows is 35 pounds per acre.