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Callistephus chinensis. The King Size China Asters are very showy, and make superb cut flowers. King Size White features large, luxuriant flowers that open up to 8cm (3") across, with slightly curled, bright white petals. They top stems around 90cm (35") tall and bloom all summer. The plants are very upright in growth, with numerous multi-branching stems. Be sure to take frequent harvests of cut flowers, or at least keep the plants dead-headed to prolong and enhance the bloom time. Please follow the planting and spacing instructions closely.
Annual.
Sow indoors 6-8 weeks before planting out, in peat pots or similar. Otherwise direct sow outdoors after the last frost date. Just cover the seeds. If starting indoors, provide bright light and a soil temperature of 18-21°C (65-70°F). China Aster seedlings are very susceptible to damping off, so provide good ventilation and only water from below.
Space or transplant 30-45cm (12-18″) apart. This spacing is key to success later in the season, so please follow the guidance. Do not pinch back young plants. Water regularly during dry spells. This plant is particularly sensitive to over-watering, and will not thrive if over-crowded, poorly ventilated, or situated close to a heat-reflecting surface. Mulch around the plants in summer to help keep the roots cool.
Callistephus is prone to a bacteria-like organism known as aster yellows. If yellow spots become an obvious problem, destroy any infected plant before the condition spreads to others. Practice strict garden rotation with China Asters: never plant them in the same spot year after year.
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Gardenerstars sells the finest and freshest seeds in the industry. All we sell is 100% pure seed: no additives, no fillers…EVER! As such, our germination rates far exceed government standards, and when planted according to recognized practices, should provide lasting and satisfying results for years to come.
That said, we can make no explicit guarantees or allowances for circumstances over which we have no control. Bad weather, poor timing, and human error can all lead to unanticipated and unsatisfactory results. As all experienced gardeners are aware, Mother Nature does not guarantee perfection, and neither can we. What we can, and do promise, however, is that the products you purchase from us will be of the highest quality to be found anywhere.
If you have a question or complaint concerning germination, or if you believe the products you received were mislabeled, visit our Refund & Return Policy page for further instructions.