Jade Tree Dropping Leaves

Soildoc

Dr Bonsai,

What can you tell me about a jade tree defoliating. We went on a short trip (4 days) and when we got back, the jade had dropped most of its leaves. I had watered it well before we left and it was indoors under growlights. I don't think the house got excessively hot or cold during our trip. I have put the tree outside to see if that helps but I haven't seen any changes. Any thoughts?

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Dr.Bonsai

Soildoc, temperature and light changes can make Jade drop some leaves. *Has it been cold or wet there for an extended period? *

Jade can start rotting from the base upward. *Usually you will see a change in the color and texture of the trunk just baove the root crown, becoming pulpy. *

I did a search and found some information as this seems to be a popular topic:

here that might be helpful.

Soildoc

Thanks Doc. It looks like water may be a problem. I'm going to let this tree dry down a little and see if it will re foliate.

KZitzewitz

I have the most problems with the jade trees. I used to have a couple, that I kept wattering like spome of my other plants, and they ended up rotting, I salvaged on for a while by taking a cutting (most of the trunk was gone, so I cut the rtest of that was okay) sand putting it in the ground without much water, and it grew, then the cat ate it... go figure...

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--Kristopher

Hope this is helpful

JADE TREE/CRASSULA OVATA syn.C.ARBORESCENS
Overview: The Jade Tree is an evergreen succulent native to South Africa where it can reach heights of 2 metres or more. In temperate zones Jades are regarded as indoor trees and should not be subjected to temperatures below 5-7 degrees centigrade (41-45 F). The Jade has a thick trunk and branch structure with thick elliptic green succulent leaves. Given sufficient light the leaves develop red edges to their leaves and produce clusters of star-shaped white flowers in Autumn. Natural leaf size is 1-2" but can be reduced to as little as 1/2" with regular pruning. The Jade Tree is suitable for informal upright and clump styles in all sizes.
General Cultivation: Jades should never be exposed to temperatures below 5-7 degrees centigrade and as a result are commonly grown indoors, though in warmer climates outdoor placement during summer is benefical. Indoors, Jades should be placed as close to a natural source of light as possible, they will cope with poor light conditions though this will result in poor growth rate and increased leaf size.
Due to their arid natural habitat, Jade Trees are capable of holding large quantities of water in their leaves. Overwatered specimen develop poor root systems which become incapable of physically supporting their heavy foliage and become top heavy. Unlike other bonsai species, Jade should be lightly watered, if the compost is allowed to dry in-between waterings the roots are encouraged to search for moisture creating a far stronger and vigorous rootsystem. This also reduce the store of water in the foliage reducing the tendency to be top-heavy. Water is only essential to the plant when the leaves start to develop a wrinkled texture. In winter this can mean watering as little as once every 2-3 weeks.
Repotting: Jades should be repotted into fast draining inorganic compost every 2-3 years. A mix of 75% inorganic matter (grit) and 25% organic (peat compost) is an ideal combination having good drainage whilst giving a degree of water retention.
Fertilization: Stronger light encourages more vigorous growth than the use of fertilizers alone, a balanced feed once a month from mid-spring to Autumn is all the nutrients Jades require.
Pruning: New growth should be continually pinched out to encourage stronger lower growth and to reduce leaf-size. Jades readily make new growth from wounds and individual leaves can be removed to quickly produce new branches. Jades respond very well to trunk reduction techniques, producing new growth from the wound area within 1-2 weeks.
Wiring: Jades respond to wiring very well, setting into new positions within 3-4 weeks depending on the vigour of the specimen. However, the bark marks very easily and can snap if bent too far. Wire loosely and bend branches a little at a time. Do not water the plant before wiring as turgid branches are far more likely to snap and mark.
Propagation: Cuttings can be taken at any time in sandy, well-drained compost. Even single leaves laid on the surface of the compost will strike.