 Close-up of flower head. | Centranthus ruber is very invasive and seeds itself aggressively. But it flowers for months and months and needs no care, not even watering, and the flowers are quite pretty. Just be prepared to uproot it when it shows up where you don't want it. | Ratings| overall | 5 | | how easy | 10 | | flower | 10 | | foliage | 7 | | propagate | 10 | | fragrance | n/a |
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