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| Hi there, I planted some pink and white rosa rugosa in my south-facing not very sunny garden two summers ago-- this is their third summer. I live at the base of a hill, so unfortunately this is my most sunny garden spot! Every winter I prune the tops of the plants on an even plane to encourage them to widen out. However, there are few blooms that happen for 2-3 weeks in the summer and then they are gone. There is a William Baffin climbing rose in the same location that seems to do better-- I haven't pruned this one since the first winter. I saw a rosa rugosa one town over this week and it still has a few blooms! My plants haven't bloomed for over a month and a half. Is my pruning of the rose rugosa preventing more flowering? Is it the location? The pH of the soil is around 7. Thanks! |
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| Most rugosas will make a spring flush and then only scattered repeat. 'Topaz Jewel' and some others are full repeaters but are not pure rugosas either. Are you letting hips develop after the first flush? If so, that would reduce repeat bloom, and deadheading will help in future years. Also, pH7 is higher than rugosas want. If the foliage is chartreuse rather than deep green, they aren't getting enough iron, and that could reduce productivity. Apply 1/2 cup of sulfur per square yard to acidify the soil--it takes about six months to work. |
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