Episode Details

Recently, a listener’s question did not get fully answered on Episode 378 of the Garden Basics podcast. Katie was asking about how to thwart the squirrels and raccoons that attacked her persimmon tree fruit. But she included this little scenic bypass: “So when the persimmon tree we’ve waited on for NINE years to fruit (it did get fruit in years 6, 7, and 8, but they all dropped. Overwatering? Underwatering?) — when said persimmon developed abundant fruit this year and it began to ripen, I decided to try to ward off the squirrels with stainless steel fruit sleeves.”

Debbie Flower and I immediately delved into pest control techniques, but totally overlooked her question about the fallen fruit and watering. Thus the purpose of this edition of the Beyond the Garden Basics newsletter.

You can find a good explanation of correct persimmon watering techniques below, answered by the California Rare Fruit Growers. Before that, though, here’s more about persimmons:

California's Central Valley was ablaze in October and early November with the other “orange” fruit tree: the brightly colored persimmon. And it's not just the fruit.

Persimmon tree leaves can turn a brilliant hue of red before the first big wind and rain storm of late November washes them off their branches. What's left behind is the unpicked fruit, dangling like holiday ornaments during December. That's a feast for our eyes...as well as a banquet for hungry birds and squirrels.

Persimmons have adapted well to our California climate: warm, dry summers and mild winters. At least 500 different Japanese persimmon (Diospyros kaki) varieties were brought to California during a major planting spree from 1870 to 1920. In 1877 alone, more than 5,000 plants in 19 varieties were imported from Japan. As a result, 99% of the U.S. commercial persimmon crop is grown here in California.Persimmons are quite nutritious, as well, loaded with Vitamin A, Vitamin C, Fiber, and antioxidants such as Beta-Carotene and Lycopene.

If you live in the Central Valley, Southern California, Bay Area or low foothills as well as throughout USDA Zones 8 and 9 ... you can grow that! Japanese persimmon trees will be available at local nurseries throughout late winter. Give them full sun and regular irrigation in the dry months for best production. Persimmon trees can tolerate partial shade.As Warren Roberts explained in the newsletter podcast, persimmons are usually classified as either astringent or non-astringent. For fresh eating straight from the tree, choose a non-astringent, self-pollinating variety such as Fuyu, Giant Fuyu, Yemon or Izu. Astrigent varieties, which need to soften thoroughly before they sweeten, include Hachiya, Chocolate or Tamopan. Those varieties are self-fruitful, as well.

Persimmon growing advice (including irrigation info) from the California Rare Fruit Growers (CRFG):Location: Full sun with some air movement is recommended for persimmon trees in inland areas, although they will tolerate some partial shade. Persimmons grown in cooler areas should have full sun with protection from cooling breezes. As an attractive ornamental the tree fits well in the landscape. It does not compete well with eucalyptus.Soil: Persimmons can withstand a wide rage of conditions as long as the soil is not overly salty, but does best in deep, well drained loam. A pH range of 6.5 to 7.5 is preferred. The tree has a strong tap root which may mean digging a deeper hole than usual when planting (when on D. kaki stock).Irrigation: Persimmon trees will withstand short periods of drought, but the fruit will be larger and of higher quality with regular watering. Extreme drought will cause the leaves and fruit to drop prematurely. Any fruit left on the tree will probably sunburn. Some 36 to 48 inches of water are ne