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General Information: This juniper is notable for its striking green foliage and beautiful bark . San Jose is a variety that is suitable for upright , cascade , semi-cascade styles.
Lighting: Full sun.
Watering:Spray the foliage with water daily during the growing season. Water when the soil is moderately dry (to a depth of 1/2 to 1 inch) but do not let the soil dry out completely.
FeedingSimon and Schuster's recommends feeding junipers from early spring to autumn ever 20-30 days using a slow-acting organic fertilizer.
If you prefer to use chemical fertilizers, apply a half-strength solution every other week of a reasonably balanced fertilizer, such as Peter's 20-20-20. You may wish to alternate with an acidic fertilizer such as Miracid.
You should not fertilize during the hottest part of the summer (July-mid August in the northern hemisphere), or if the tree is weak or has recently (2-4 weeks) been repotted.
Pruning and wiring:Reduce the roots gradually, removing no more than one third of the roots at each repotting. To develop the foliage, pinch out the tender new shoots using your fingers. Do not use scissors, as the cut needles will turn brown. Pinching must be done continuously during the growing season.
Prune undesirable branches (especially those growing straight down from their parent branch) when repotting or during the growing season.
Wiring is best done in autumn or early winter, so that the branches can become accustomed to their new position while the tree is dormant. Wiring done at other times must be watched carefully for signs of wire cutting into the bark, and must be removed immediately if this happens. If necessary, the tree can be re-wired after removing the old wire.
RepottingRepot young trees (up to 10 years) every other year. Repot older trees every 3-4 years. Repotting is best done in spring. Junipers can also be repotted in autumn if necessary, since they enter a period of renewed root growth at that time. Extensive root pruning in autumn is probably not a good idea, however.
For San Jose Juniper we recommend Hollow Creek Farms Double Screened Bonsai Soil or Hollow Creek Farms Professional Main Bonsai Soil. Pines and other conifers grow in association with a symbiotic fungus which grows in the root ball of the tree. If this fungus is not present, the tree may die. For this reason, pines and other conifers should never be bare-rooted, unless steps are taken to re-introduce the fungus to the repotted plant, such as adding Hollow Creek Farms Micro Plus to the newly potted soil
The tree should be protected from wind and direct sun for a month or two after repotting.
Pests and diseases: Junipers are a favorite victim of red spider mites. If the tree appears weak, with yellowing foliage, it may have spider mites. To check for spider mites, hold a sheet of white paper under a branch and gently shake the foliage. If the paper comes away with many small dots that move, it has spider mites. To combat spider mites, spray with insecticidal soap or a nicotine solution (which can be made by soaking tobacco in water overnight
Can be purchased at www.hollowcreekbonsai.com