The Juniper bonsai is an evergreen coniferous tree that grows outdoors.
Position & Light: The Juniper bonsai must be placed in a sunny spot outside year round. If the sun gets very hot and intense in your climate, shade the tree from the most intense sun of the day. In Winter the Juniper must be protected from temperatures below 14ºF. Some trees will change color during Winter to a purple brown and return to green in Spring.
Watering: /the Juniper bonsai can tolerate some drought, but you should never let the soil dry out completely. Water the bonsai every two-three days. If the Juniper is placed in full sun, it may require daily watering. You can either water the bonsai with a watering can, hose with watering attachment, or by placing the pot in standing water for about 10 minutes to an hour. Frequent misting is recommended to keep humidity high.
Fertilizing: Fertilize twice a month from Spring to Summer with with fish emulsion or a balanced fertilizer diluted to half strength. When growth slows down, reduce fertilizing to once a month. You may continue a once a month fertilizing if the tree continues to grow through Winter.
Pruning: Pruning is important for the Juniper bonsai because it will grow a structure that is too much for the roots to handle if left unchecked. Long shoots can be trimmed throughout the growing season, but do not trim every growth tip because the tree will not grow again from bare branches. Removing all growth tips will severely weaken the tree. Thin out the growth pads at the base when the foliage pads become too dense. This tree will also create deadwood that can be shaped and styled.
Wiring: A Juniper bonsai is usually heavily wired as a young plant. They can tolerate strong bends and the growing wood responds well to wiring. Deadwood will not bend so you must either take care in avoiding the deadwood or break it off from the plant. You may want to use raffia or tape to protect the branches of the Juniper. The foliage pads need to be fanned out and thinned to keep the inner parts alive. The Juniper is also more vulnerable to pests if proper pruning is not achieved.
Repotting: Repot the Juniper bonsai when the roots have become pot-bound. In most cases this will be every two-three years. Repot during mid-summer removing the soil with a rake and trimming away 20-30% of the root system. Use rich soil that drains well and avoid leaving any empty air pockets. Water your bonsai well after repotting by placing the pot in standing water.