Shrub Agave americana [Century Plant] Can take as few as 10 years to flower in warm climates, to 60 years in colder climates. Once it flowers, it dies and offsets around the base of the original plant eventually form a group of new plants. Suckers produced from the main plant may take only 10-15 years to flower. Beware of thick point tips on its leaves, prune off to protect children. Some susceptibility to Agape weevil, especially when weakened.
Herbaceous Ageratum houstonianum 'Blue Planet' [sold as Blue Planet Flossflower] [Blue Planet Flossflower]
Herbaceous Ageratum houstonianum 'Blue Planet' [sold as Blue Planet Flossflower] [Blue Planet Flossflower]
Tree InvasiveThis plant is considered invasive Ailanthus altissima [Tree of Heaven] Unusual form and texture not unlike a large sumac. Highly adaptable. Tolerates salt spray. Dioecious. Coarse and inclined to drop twigs. Male flowers are malodorous; female plants make many weed seedlings. Ailanthus altissima forms dense, clonal thickets which displace native species and can rapidly invade fields, meadows, and harvested forests. This invasive tree species is extremely tolerant of poor soil conditions and can even grow in cement cracks. Ailanthus altissima is not shade tolerant, but…
