CLUSIUS' GENTIAN Gentiana clusii
This Gentian has very short stems, and has a very similar appearance to Gentiana Acaulis (stemless gentian)! Plants are clump-forming, and leaves are low, allowing the flowers to be held high for all to see. The flowers are also quite large, and a true deep-blue.
Type: Hardy perennial
Hardiness zones: 5-8
Height: 10 cm or 4"
Location: Full sun
Seed sizes per pack: 5
Germination: As with many perennial seeds, these seeds benefit from a period of moist cold to help them begin to grow. This is done by giving them a cold 'winter' period (artificial or natural), and then a warming to simulate 'spring', and time to grow! This is especially important with Gentian. Here's how this can be done:
Obtain a planting container that has holes in the bottom for excess water to drain. Place the seeds just under the surface of your growing medium, and water. Place your container at room temperature for 1 week (they will not grow yet), and then place them in a refrigerator for 5-6 weeks. Once the cold period is completed, place the container back at room temperature for them to germinate. Be sure to keep the soil moist during this entire germination period. Seedlings will sprout a few weeks, or occasionally several months, after the warming period. They require some patience, but are well worth the effort!
These seeds can also be planted in a cold frame outdoors in very early spring (or in winter if you live in a warm climate), while the temperatures are still cold and fluctuating, as long as you are able to keep the soil consistently moist. They will still need several weeks to germinate.