A chaste tree is a Mediterranean and Asian native with multiple trunks that can be trained to make a nice shade tree. Leaves of the chaste are aromatic, and it produces small, fragrant lavender-blue flowers on spikes during the summer and fall.
It's vital to provide supplemental moisture in those early years, if nature doesn't provide regular soaking rains. During hot, dry weather, new trees may require water as often as three times per week to ensure that the root ball doesn't dry out.
A complete fertilizer, such as 16-4-8, 12-6-6 or 12-4-8, is generally recommended, unless the soil test reveals that phosphorus and potassium are adequate. Two kinds of fertilizers are available: fast-release and slow-release.
You can prune the roots back and replant it into the same container or transplant it in another location. Root pruning is a similar technique to bonsai and will help to keep the tree small. Remove the tree from its container, tease out and trim the roots, and then repot. Rather than having to resort to the intense task of root pruning, you should consider transplanting the tree to a larger container or if space permits, within the landscape. Prune any that are damaged or broken.
Temperatures between 65 (18 °C) to 75 F (23 °C) and nighttime temperatures between 50 t(10°C) to 60 F (15 °C).