China asters need a suitable bright position and enough space for their stems, with moisture checked as the plants grow. Use the named variety's mature height when planning a pot or border.
Choose a sunny annual display
China asters need useful light and space suited to the chosen variety. Tall cut-flower forms can need support, while compact types fit containers more readily. Use the seed label's mature size when planning the bed.
Handle seedlings before they are crowded
Sow in suitable clean compost and follow the packet for timing and temperature. Give emerging plants light and enough room. Move them on gently, then acclimate them before outdoor planting in suitable weather.
Water the roots and keep drainage clear
Young plants need steady establishment. Older pots still require checking during warm or windy spells. Avoid keeping foliage constantly wet while the root ball remains unevenly supplied.
Inspect wilt rather than feeding it
A collapsing aster can have root or disease problems that extra fertilizer will not correct. Check the base and root zone, keep tools clean and obtain a reliable diagnosis for repeated losses. Remove spent flowers for tidiness or retain selected seed where wanted, allowing for variation among seedlings.
