Even an invasive flower like Bermuda buttercup can be delightful (when it's in a vase). Here in Portugal, winter can be dreary but it can also be colorful.
Bermuda Buttercup: Rethinking a Perennial Garden Weed - Gardenista
Vinagrillo. Oxalis pes-caprae.
Weed early and often: creeping buttercup – daysingarden
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Sourgrass (Bermuda Buttercup)
Weed early and often: creeping buttercup – daysingarden
Bermuda Buttercup (not native)
Browse Yellow - Gardenista
Outstanding Perennials for Landscaping Success
Browse Weeds - Gardenista
Oxalis pes-caprae - Bermuda Buttercup
Weed Wisdom: What 10 Common Weeds Are Trying to Tell You - Gardenista
Browse Weeds - Gardenista
50 Herbology in Wicca ideas plants, herbology, planting flowers
Battling Buttercups Buttercup Oxalis, that is – otherwise known as Bermuda buttercup, sour grass, or oxalis pes-caprae - UC Master Gardeners of San Mateo & San Francisco Counties - ANR Blogs