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Keep your trees healthy: Learn correct pruning


Here's an example of how not to prune a tree: The street side of this fruitless mulberry
has been hacked
but the residence side still has all its canopy. This was done in July, at the
height of summer,
rather than during winter dormancy. (Photo: Kathy Morrison)
Free workshops on the winter calendar

Is there anything in horticulture sadder than a badly pruned tree? Poor pruning practices weaken trees and make them dangerous to people and structures.

Learn proper techniques for pruning landscape trees this Saturday, Jan. 11, from 2 to 3 p.m. at the Pocket Greenhaven Library, 7335 Gloria Drive, Sacramento.

This free workshop will be presented by the UCCE master gardeners of Sacramento County. It's an indoor class that will cover tools and techniques as well as basic cuts. The master gardeners also will discuss the best time of year to prune to ensure your trees heal properly.

For more information on master gardener workshops and events, go to
sacmg.ucanr.edu .

The Sacramento Tree Foundation, naturally, has a wealth of information on pruning advice at its website, sactree.com .

The foundations's next available pruning workshop is Saturday, Feb. 1, 8:45 a.m. to 11 a.m. at Garden Valley Elementary School, 3601 Larchwood Drive, Sacramento. It includes an indoor classroom portion and outdoor field training to practice pruning in small groups on young trees.

There is no charge for the workshop, but anyone interested is asked to sign up ahead of time. See their page here to do so.

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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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