Silver Tree (Leucadendron)
Question from Randy:
Can you tell me when, what and if you are supposed to feed leucadendrons. Seems that I heard somethin’ about NOT feeding them. Thanks. I have some that are doing great since I got the water situation dialed in.
Answer from Pat:
Among South African plants, most of which flourish in Southern California, silver tree (Leucadendron argentum) is a tricky one but when successful it can be glorious, statuesque, windblown looking and lovely near the ocean. This needs good drainage and cannot abide manure in the soil. Other leucadendrons are easier but all need the same care as for proteas: Fast drainage, preferably on a slope, full sun, protection from drying winds but at the same time good air circulation, regular moisture until established; slopes are good for growing them so water flows sideways through roots and away. After they are established water only once every 2 or 3 weeks. Most need acid soil (they do not like alkaline soil). Fertilize lightly in March with nitrogen, avoid phosphorus. If plants show signs of chlorosis, feed lightly with iron.