Answer: If you're purchasing new plants, they are already conditions and should bloom this fall; plant them anytime this summer. If you're moving chrysanthemums from another bed into a new one, you'll want to pinch the stems back twice during the growing season to keep the plants dense and delay flowering until the fall. Here's how: In June, pinch the shoots back to about 8", in July, pinch them back again to about 6". This will give them 8-12 weeks to develop flower buds - just in time for fall color.
Hardy Chrysanthems are perennial plants and the most commonly grown in gardens. The tops die down in the winter but the roots remain alive and produce shoots in the spring. If not pinched back, these shoots will develop flower buds early in the season. Pinch as outlined above. When the tops die down in the winter, cut them off at ground level. Your plants can be divided in the early spring after new shoots appear. Each rooted shoot will develop into a new plant. Enjoy!
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