Biennial grown as an annual. Well adapted to cold climates, these ornamentals are at their best when most flowers have given in to fall frosts. The colors—green outer leaves and pink, white or purple centers—deepen at the onset of chilly autumnal nights. Start indoors 5–7 weeks before setting out in midsummer for fall maturity. While weather is still hot, sidedress with manure so the plants will make rapid growth before nights begin cooling. As autumn approaches, withhold nitrogen to speed coloring. 10" tall. About 350 seeds/g. ③
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