Plant Encyclopedia
Search and identify 1,000+ plants, flowers, trees, and succulents — with care, light, water, and how to tell them apart.
Centaurea
Centaurea is a large genus best known for the cornflower, a cheerful annual with intense blue, fringed flowers. Easy and long-blooming, it is a cottage-garden classic beloved by bees and butterflies.
flower
Japanese Knotweed
Japanese knotweed is an aggressive bamboo-like perennial that spreads by powerful rhizomes, damaging pavement and buildings and ranking among the world's worst invasive plants.
shrub