Yucca and other flowering plants at Maple & Brooks |
Yucca is a genus of some 40-50 species of perennial shrubs and trees notable for their rosettes of evergreen, tough, sword-shaped leaves and large terminal panicles of white or whitish flowers. They are native to the Americas and the Caribbean in a wide range of habitats, from humid rainforest and wet subtropical ecosystems to the hot and dry deserts and savanna. A few species are winter hardy and popular as landscape plants.
Trail of Flowers signage, north of Summer Street |
This species prefers full sun and well-drained soil, as shade will stunt growth and wet soil rot the roots. In time, it develops a large, fleshy, white taproot with deep lateral roots. Once planted and established, it is difficult to remove, as any remnant roots keep sending up new shoots.
In addition to the green-leafed native plant, Adam’s needle comes in colorful cultivars: Bright Edge, Color Guard, Golden Sword, Blue Sentry, Garland's Gold and Excalibur. For all, the leaves bear tiny thread-like filaments around their edges, which appear as if the plant is peeling. Images can be found via internet search. Nurseries carry cultivars or can special order. Beyond the first year, the plants are drought-resistant and do not need fertilizing. Plants can live up to 50 years.
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Yucca clusters can put up multiple flowering stalks |
Not here, but in native areas in the southeast, Adam’s Needle flowers are pollinated by yucca moths. The moths transfer pollen from the stamens of one plant to the stigma of another, and at the same time lays an egg in the flower; the moth caterpillar then feeds on some of the developing fruit/seeds but can leave enough seeds to perpetuate the species. Each flower develops a fruit that is about two inches long, edible raw or cooked after the bitter seeds are removed. In the southeast, Native Americans split the leaves to make ropes, fishing nets and baskets. Peeled roots, pounded between rocks and mixed with water, make a lather than can be used to wash hair (A related species, native to the southwest, has the common name "soapweed".)
Other winter-hardy species that may be available for purchase from nurseries are Soapweed, Banana Yucca, Beaked Yucca, Spanish Dagger and Dwarf Yucca. These can flourish in Zone 5, which includes eastern Massachusetts.
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