Outdoor: The situation here is the same as it was last month. Leave trees in winter protection and water as needed. Do not fertilize. Deciduous trees and pines may be wired. If your trees can be moved you may bring them indoors for up to eight hours for work. Be aware of possible flooding in in-ground cold frames.
Indoor: Sunlight has been scarce lately so be sure to give indoor trees as much light as possible. Trees at windowsills could use some supplemental artificial light to compensate for the cloudy weather. Check the soil moisture daily and water as needed. Trees that are putting out strong new growth can be fertilized. Provide extra humidity with a humidifier, vaporizer, pebble tray, or another device.
Works Cited
Editor. (Vol. XXII, Number 2, March 2005). Things To Do This Month. Bonsai Hai. Prairie State Bonsai Society.
