Dahlia Seeds - Single Mix

Minimum Seeds per Packet: 100

Packet Weight: 1g

Planting Season: After Last Frost

Sowing Method: Direct Seed 

Seed Depth: 1/4”

Direct Seed Spacing: 6-8"

Soil Temperature: 65-70℉

Days to Sprout: 10-28

Mature Spacing: 24-36"

Sun Requirement: Full Sun

Frost Tolerance: Frost Sensitive

Days to Harvest: 1 Year

Production Cycle: Perennial

When to Seed Dahlias

This bloom should be transplanted or direct seeded into the garden once all danger of frost has passed. If starting indoors for transplant, start your seeds four to eight weeks ahead of your last frost date. Dahlias like to germinate in cooler springtime soil temperatures but are extremely frost sensitive. In most areas, starting them indoors will result in the most success. 

Where to Plant Dahlias

Dahlias will need a spot with full sun and loose, well-draining soil that is rich in organic matter. They are perennial in warmer growing zones, so keep this in mind when choosing a location. 

Growing Dahlias

Sow seeds ¼ inch deep and six to eight inches apart. Once germinated, thin your seedlings to 24 to 36 inches apart. As your plants mature, dahlias will benefit from staking. Pinching your dahlia stems back once they reach eight to 12 inches will result in more flowers and thicker stems. Regular harvests or deadheading will result in more blooms. In growing zones where dahlias are not perennial, the tubers can be dug up before the first frost and stored overwinter for replanting in the spring. Keep them packed in vermiculite in a dark place between 40 and 50 degrees Fahrenheit. 

Harvesting Dahlias

Using clean, sharp shears, snip single flowers at the base of their stems (stem lengths will likely vary, especially if the plants have been pinched). Harvest them when they are most open for the largest blooms. Dahlias are stunning cut flowers but only keep in vases for about five days.