Bonsai Temperature Zones

Outdoor tree and plant growing zones.
Bonsai temperature zones. The plant growing zones below are a general guide to show you the different temperature growing zones for trees and plants. The usda plant hardiness zone map. The maps below are based on the average annual minimum winter temperature that means over the course of years the coldest temperature degree registered for each winter. The jade tree is considered an indoor tree in most temperate zones although it can be grown outdoors in full sun and sufficiently high temperatures.
Most outdoor bonsai trees need sunlight for at least a few hours a day. All of our bonsai care pages state a zone hardiness zone. Keep temperatures above 5 degrees c or 41f at all times. Plant growing zone maps by yoko in tree and plant care.
Most growers of tropical and semitropical bonsai bring their trees inside the house for the winter when temperatures start falling below 50 degrees. Common bonsai species particularly those from the japanese tradition are temperate climate trees from hardiness zones 7 to 9 and require moderate temperatures moderate humidity and full sun in summer with a dormancy period in winter that may need be near freezing. Specific bonsai care guidelines for the jade bonsai position. Specific care of outdoor bonsai species.
Light is the first. Cold climate bonsai tree types if you live in an area that does not get extreme winter weather temperatures that do not fall lower than 25 degrees fahrenheit or 4 degrees celsius then you have the option of choosing temperate climate trees such as junipers boxwoods cotoneasters yews or roses. It needs lots of light or even full sun especially when kept indoors. In theory you can count on hitting that average number once during the winter.
It is the simplest and most cost effective solution to over wintering but it comes with a few problems which must be addressed. Its handy if you are. Subtropical bonsai trees can withstand somewhat lower temperatures and generally thrive when they enjoy a winter season with temperatures well below that of the standard room temperature. Tropical tree species need relatively high temperatures throughout the year similar to the standard room temperature of your living room.