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Smooth blue aster seedlings1/23/2024 Maintain one inch of moisture per week as described above. You can settle the entire seed-starter pot into the soil with the top rim even with the soil surface. Transplant it into prepared garden soil in a sunny location. When you see new leaves, you’ll know the stem has rooted. Fill it three-quarters full of potting soil that contains fertilizer.īury the dipped stem two inches deep in the soil and tamp to secure it. Select a biodegradable six-inch seed starter pot. When roots grow, transplant the rooted stem cutting into the garden per the instructions below.Īnother way to root a soft stem cutting is to dip the cut bare stem in rooting hormone powder and plant it in soil. Remove the leaves from the bottom four inches of the stem. In late spring to early summer, cut about six inches from the growing tip of a fresh, soft stem. If you have a friend you can ask, you can take soft stem cuttings from mature plants to produce an exact clone of a native species or hybrid variety. Provide one inch of water per week as described above. When the second set of true leaves sprouts, thin to one seedling per interval. Sow one to two seeds every 12 to 18 inches. Prepare the soil in a sunny prepared garden bed. ![]() Provide one inch of water per week, rain included. Tamp the soil around the cells to hold them firmly in place. Set the biodegradable cells in the soil so the top of each cell is at ground level. Space at intervals of 12 to 18 inches to allow for ample airflow and inhibit fungal growth. Prepare the garden soil by working it to a depth of eight to 12 inches to aerate it and make it crumbly. When the seedlings have two sets of true leaves, thin them to one per cell.Īfter the danger of frost passes, acclimate the seedlings to the outdoors for a few hours each day, increasing the time spent outside over about four days.Ĭhoose a sunny location. Start seeds indoors four weeks before the last spring frost date.ĭirect sow seeds into the garden after the last spring frost date.įill biodegradable seed-starter cells three-quarters full with a potting medium that contains fertilizer.Ĭover the seeds with one-eighth of an inch of soil. There are two options when starting from seed: However, hybrids are not likely to produce replicas of a parent, so be prepared for surprises. You can purchase seeds or harvest them from a friend’s plant. It’s easy to propagate these plants from seed, soft stem cuttings, transplants, or division. novae-angliae, in the wild with no breeder intervention. ericoides, and the New England species, S. It results from the natural crossing of the heath aster, S. oblongifolius, is a lavender species that’s also commonly called a heath aster.Īnd another aster that falls under the heath umbrella is the amethyst aster, Symphyotrichum × amethystinum. pringlei, a white type that is also sometimes called a heath or frost aster. The heath aster has been mistaken for Pringle’s aster, S. In this case, the rootstock varies slightly, with the pansum variety having a fleshier rhizome. Named varieties may have slightly dissimilar traits that distinguish them from the main species, but not so much as to be completely different species. They are generally green but may be bronze. ![]() The leaves are narrow, linear, and often slightly hairy. The yellow shades to reddish-brown as the flowers fade. They consist of colorful rays surrounding a yellow center disk of florets. The stems branch and bear sprays of composite flowers that measure half an inch or less in diameter.
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