Blue Columbine Seeds

Colorado Blue Columbine seeds need cold stratification to germinate better. For that, wrap the seeds in a damp paper towel, seal them in a plastic bag, and leave them in the fridge for 3–4 weeks before sowing. After that, press seeds just 1/8 inch into the soil, but don't cover them, as columbine seeds need light to germinate. Soil temperature of 65–70°F works best, and expect seedlings in 14–28 days. Space seedling 10-16 inches apart. Starting Blue Star columbine seeds indoors 8–10 weeks before last frost to get bloom earlier in the season. Alternatively, you can direct sow columbine blue star seeds in fall and let winter do the stratification work for you.

Blue Columbine seeds grow into plants that handle different conditions. However, they prefer four to six hours of direct sun per day, well-drained and moderately fertile soil with pH around 6.0–7.0. Water young plants consistently until roots are established; after that, they're fairly drought-tolerant and won't need much attention. Waterlogged soil is the main thing to avoid — root rot sets in fast. In warmer zones, you may apply a layer of mulch around the base to protect roots from heat.

Deadhead spent flowers regularly to extend the bloom period. Cut the foliage back after flowering and it often pushes a second flush of leaves. To collect Columbine Blue Star seeds, wait until the pods turn brown and feel dry to the touch, then snip them and shake the seeds into a paper bag. Divide established clumps every 3–4 years.

Gardeners buy Blue Columbine seeds for cut flower gardens. Harvest stems in the early morning when the flowers are just about to open, cutting at a 45-degree angle. Place stems immediately into cool water, and remove all leaves below the waterline. Flowers last 5–7 days in the vase.