When to cut back asters?

What is a type of gardening that utilizes organic compost for fertilizers? When you clear trees without replacing them is called? Why do cactus's have a pleated trunk? What is difference between vegetative planting and seed agriculture? Are bamboos deciduous? How can you root a wandering jew plant in water? Can you top a tomato plant? Why are my succulent tips turning brown? What are the two types of fertilizers? What is riboflarin? What kind of fertilizer do magnolia trees need? What is the English name for arali tree? Where to find the song let the flowers bloom again? Is bamboo a weed? How can I effectively get rid of white bugs on my basil plant? Which fruit was once called Ida? Are there any protection programs for the aye-aye? What colors can a tulip be? Can monkeys pollinate flowers? It is not raining rain for me it's raining daffodils in every dimpled drop I see wild flowers on the hill.?