If you're looking for a relatively easy-to-grow annual that produces lush romantic blooms on long straight stems, look no further than annual Aster (Callistephus chinensis). Aster are in flower from midsummer to late autumn, bringing beauty and drama to the garden when many other summer annuals have begun to fade into a distant memory.

Harden off and plant plugs soon after arrival, as Aster can be sensitive to stress (can't we all!). They prefer well-drained soil rich in organic matter, and enjoy full-sun. Plant plugs in the late spring, only after the threat of frost has passed and your overnight lows are at or above 55F.

To stave off issues with fusarium, it is recommended that you not plant Aster in the same bed every year (every other year is fine). They grow pretty upright, so plant plugs 6" apart to prevent much flopping. You'll receive very tall stems if these are left unpinched. Pinching deeply 2 weeks after transplant (leaving 3-5 internodes) will promote branching. Callistephus chinensis establish during the long days of summer, and then initiate bud after the days begin to shorten. They don't mind some human intervention; stem length and flower size can be easily manipulated by pinching or not pinching, disbudding or not. If Aster Yellows disease is prominent in your area, you might not succeed with these. They can also be prone to fusarium, powdery milder, thrips, spider mites, blister beetles, and aphids. Remove any diseased plants from the garden right away, and ensure that the soil remains well drained.

Annual Aster requires the short days of late summer in order to initiate flower. So if you have bright streetlights in your neighborhood or other outdoor lighting at night, this could affect the plant's ability to flower. Harvest when the flowers show full color, but before the pollen has ripened. Strip off the bottom leaves and place into tepid water to rehydrate. Under optimum conditions, you can expect 5-7 blooms per stem!