Should goldenrod be pruned down to the ground?
There are more than 100 species of this perennial herb, and most of them are native to North America.
There are cultivar/varieties in different sizes, short or tall available for a home garden. One tall goldenrod beauty is Solidago rugosa 'Fireworks'.
Avoid overly rich soils. To create more compact plants, cut back by half in June or pinch back in May. This will also increase branching and bushiness. Can be divided every 2 - 3 years in spring. Spent flower stalks provide winter interest, but can be cut down pretty much anytime.
Note: For gardeners concerned about goldenrod's alleged allergic reputation, please note that the greater culprits are the plants that produce wind-borne pollen, such as ragweed (Ambrosia spp.). This common garden weed blooms at the same time as goldenrod but generates an unusual amount of pollen in the air. Goldenrod produces a sticky pollen meant to adhere to insects, not meant to fly around.
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