Here at the greenhouse, we plant them outdoors in early spring with pansies and English daisies, since they are frost tolerant to 15F.Īs an unusual cool weather annual, these easy care plants will bring many weeks of colorful, fragrant enjoyment in your pansy display, then serve as the pillar in your summer container when joined with your filler and spiller plants. Water when dry, being sure to water thoroughly when you do water, then wait until they are pretty dry before watering again. Plant care requirements include full sun, general purpose potting soil, and fertilization with a general purpose type every other week during the growing season. ![]() Pruning of these woody plants is best done immediately after blooming.Īfter blooming in spring, these plants can be used as wispy green tall plants in summer planters, with summer annuals planted beneath them, then as the weather cools again in the fall, you will be rewarded once again with another set of colorful, fragrant yellow flowers. Other trimming is up to you but not strictly necessary. Just a light deadheading will do the job. Broom Shrub Care Once the flowers are spent and seed heads have formed, pruning broom shrubs is recommended to reduce seed spread. They keep nicely when treated as an indoor houseplant in winter, then set flower buds if kept cool in late Jan., early Feb. Try growing sweet broom shrubs in groups as a hedge or border with brilliant yellow flowers and stems of wild abandon. Here in zone 5 and 6, they have to be brought in to overwinter. ![]() ![]() Their fragrance is a very strong sweet citrus scent, most pronounced on bright, sunny, cool days. The Sweet Broom plant has very fragrant, bright yellow flower spikes that bloom in early spring and again in the fall.
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