Elaeagnus Et Cetera - Eat The Weeds and other things, tooSilverthorn (Elaeagnus pungens) is a fast-growing, evergreen shrub (up to 25 ft) used for hedging, featuring silvery-green foliage, sharp thorns, and fragrant white flowers. It is highly durable, drought-tolerant, and thrives in zones 7–11. However, it is considered invasive in Florida, often displacing native plants.