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A hardy hibiscus plant enjoys second flowering
A mature perennial hibiscus is sending up buds again, offering an October bonus after its usual midsummer bloom, extension experts said.
Although hardy hibiscus typically blooms in mid to late summer, some plants are producing a second flowering in October. Having buds and bloom this late in the season is certainly a welcome bonus.
The Summerific Series and Midnight Marvel Hibiscus have enjoyed success in local gardens, differing from tropical-type hibiscus sold as patio plants. The latter has wintered well in perennial gardens for years.
Reaching about four feet in height, these perennials produce huge blossoms up to ten inches across. They are worth planting in Zone 3 or Zone 4, requiring only a little extra winter protection.
Don Kinzler, NDSU Extension-Cass County, advises a final fall rhubarb harvest is safe if done before frost damages leaves. If frost causes wilting or damage, the rhubarb should not be consumed.
When moving roses like the Miracle on the Hudson, Kinzler recommends waiting until early spring before growth begins. Pruning the plant back by two-thirds is the single most important step to compensate for root loss.