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Dig In: Garden checklist for week of Dec. 30

Sacramento Digs Gardening
BY Debbie Arrington PUBLISHED DEC 29, 2018

A peach mummy hangs on a Babcock peach tree. (Photo: Debbie Arrington)

Watch out for 'mummies'; good time to prune and spray peaches

On this last December weekend, be on the lookout for mummies.

Peach mummies, to be specific. Clinging determinedly to branches, these strange shriveled black petrified fruit are full of fungal spores. Until the leaves fall, a peach mummy (or mummy peach) can be easily overlooked. But if a peach or nectarine tree bore brown-spotted fruit that quickly went bad, it most likely had brown rot. Those mummies are a sure sign.

Another symptom are blossoms that wilt or brown before bees have a chance to pollinate. That usually happens during wet springs followed by a summer with few peaches. Brown rot spores are again to blame.

Next to leaf curl, brown rot is among the most common peach tree problems in Sacramento. Fortunately, it's easily preventable. Get rid of the mummies.

Copper fungicide, the same treatment used to prevent peach leaf curl, also fights brown rot. A single application now can control both for 2019. These last days of 2018 look like ideal conditions for peach and nectarine tree maintenance. After the wind dies down, dry and clear weather is forecast until next Sunday.

Copper fungicide sprays need 24 hours of dry, calm weather before applying. With no rain or fog, this is a good window of opportunity. Among the copper fungicides available, Bonide Liquid Copper Fungicide is considered suitable for organic gardening. It's actually a copper soap that clings to branches and provides some extra protection.

If needed, prune before spraying. Remove any remaining leaves and those mummies. Dispose (don't compost) leaves and any infected twigs. After pruning, sterilize your pruners and loppers with disinfectant spray or wipes (Lysol works fine) or dip the blades in a gallon of water with 1/4 cup bleach.

Other gardening tasks for this final weekend of 2018:
* Clean and sharpen garden tools. You'll use those pruners a lot this season.
* Mulch, water and cover tender plants to protect them during threat of frost. Succulent plants are at particular risk if temperatures drop below freezing. Make sure to remove coverings during the day.
* Just because it rained doesn't mean every plant got watered. Give a drink to plants that the rain didn't reach, such as under eaves or under evergreen trees.
* Plant bare-root perennials, roses and fruit trees. Also available bare-root are berries, kiwifruit, grapes, artichokes, horseradish and rhubarb.
* It's not too late to plant a winter garden. Lettuce, cabbage and broccoli can be planted now; use transplants for best success. Plant garlic and onions.
* Add a few more cool-weather annuals such as pansies, snapdragons, calendulas and stock.

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Keywords:

Sacramento peach leaf curl winter weather brown rot garden chores copper fungicide fruit trees bare-root plants winter annuals gardening pruning garden tools

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Food in My Back Yard Series

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Garden Checklist for week of April 27

Once the clouds clear, get to work. Spring growth is in high gear.

* Set out tomato, pepper and eggplant transplants.

* From seed, plant beans, beets, cantaloupes, carrots, corn, cucumbers, melons, pumpkins, radishes and squash. Plant onion sets.

* In the flower garden, plant seeds for asters, cosmos, celosia, marigolds, salvia, sunflowers and zinnias. Transplant petunias, zinnias, geraniums and other summer bloomers.

* Plant perennials and dahlia tubers for summer bloom. Late April is about the last chance to plant summer bulbs, such as gladiolus and tuberous begonias.

* Transplant lettuce and cabbage seedlings.

* Weed, weed, weed! Don’t let unwanted plants go to seed.

* April is the last chance to plant citrus trees such as dwarf orange, lemon and kumquat. These trees also look good in landscaping and provide fresh fruit in winter.

* Feed citrus trees with a low dose of balanced fertilizer (such as 10-10-10) during bloom to help set fruit. Keep an eye out for ants.

* Apply slow-release fertilizer to the lawn.

* Thoroughly clean debris from the bottom of outdoor ponds or fountains.

* Start thinning fruit that's formed on apple and stone fruit trees -- you'll get larger fruit at harvest (and avoid limb breakage) if some is thinned now. The UC recommendation is to thin fruit when it is about 3/4 of an inch in diameter. Peaches and nectarines should be thinned to about 6 inches apart; smaller fruit such as plums and pluots can be about 4 inches apart. Apricots can be left at 3 inches apart. Apples and pears should be thinned to one fruit per cluster of flowers, 6 to 8 inches apart.

* Azaleas and camellias looking a little yellow? If leaves are turning yellow between the veins, give them a boost with chelated iron.

* Trim dead flowers but not leaves from spring-flowering bulbs such as daffodils and tulips. Those leaves gather energy to create next year's flowers. Also, give the bulbs a fertilizer boost after bloom.

* Pinch chrysanthemums back to 12 inches for fall flowers. Cut old stems to the ground.

* Mulch around plants to conserve moisture and control weeds.

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