Gentian (Gentiana) bears cobalt blue, trumpet-shaped flowers growing on short comes from green, mat-like foliage. Native to alpine areas, gentian grows through the United States in temperate climates. Gentiana affinis “Ovata” is a California native-plant, blooming in June and July. Grow tiny species of gentian, including Gentian acaulis, in rock gardens, or plant better quality species, including willow gentian (Gentian asclepiadeas) in borders in partial shade where summers are warm and dry. Gentians usually develop in symbiosis with fungi that are specific. Seeds with acid — a derivative of Gibberella fujikuroi fungus. Cold stratification assists seeds break.
Seeds with acid. Fold a paper towel into a square measuring 4 1/2- by-4 1/2 inches. Dampen the paper-towel. Lay a-3-by-3-inch bit of polyethylene plastic in the middle of the toweling. Cut a 2 1/2 by- of paper toweling and fold it into a rectangle 1/2 by-1inch. Moisten it and place it in the middle of the plastic. Seeds with this rectangle. Dip the end of a toothpick — the type which is rounded on both sides — in to the acid powder that is dry. Sprinkle the powder on the seeds. Keep the toweling flat and place it inside a plastic bag to to store moisture. Dip the paper toweling to float the seeds when seeds sprout. Pour the water above a seed prepared with seed- .
Seeds to assist in breaking. Using a seed-germination medium, sow seeds in a seed prepared in the spring-time. Place the bag and seal. Place the flat in a fridge for 8 weeks. Remove the flat in the refrigerator and keep in a place at 70 to 75 degrees Fahrenheit. Transplant seedlings to peat pots.
Plant gentian in moist, well-drained soil having a pH of 5.0 to 7.5 in Sunset’s Climate Zones 6 through 22. Grow gentian where summers are dry and warm, or in full-sun where summers are cool and moist. Small species, up to 6-inches, are spaced 6 to 12″ apart. Larger developing species are spaced 1 4 to 24 inches apart.