Are marigolds considered invasive?
Are marigolds considered invasive? Though swamp marigold plants can spread, they are not considered invasive in most regions. The same cannot be said for Ficaria verna, or lesser celandine. Established plants multiply quickly, growing to form dense, matted tangles that overtake or choke less vigorous native species. Regular deadheading (removing spent blooms) encourages continuous flowering […]
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