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Dig In: Garden checklist for week of Nov. 21

Sunny, cool days make for good fall gardening weather

Red and gold leaves
A persimmon tree shows off its fall colors. (Photos: Debbie Arrington)

Sunny days and clear nights; that’s the Thanksgiving week forecast for Sacramento. After so many foggy days, expect several bright, crisp mornings and near-perfect fall afternoons – all great for gardening or other outdoor activities.

According to the National Weather Service, afternoon highs will be right about normal – in the low 60s. Without cloud cover, overnight lows will feel downright chilly, dipping down to 40 degrees on several nights.

This change in temperature will have an effect on our landscapes. Any deciduous trees that were holding onto their foliage will start dropping leaves in droves. Cold-sensitive plants such as begonias or tomatoes will shut down and die back.

Get ready for the holidays ahead with some seasonal TLC:

* Rake and compost leaves, but dispose of any diseased plant material.

* To help prevent leaf curl, apply a copper fungicide spray to peach and nectarine trees after they lose their leaves this month. Leaf curl, which shows up in the spring, is caused by a fungus that winters as spores on the limbs and around the tree in fallen leaves. Sprays are most effective now, but to work, they need several days of clear, dry weather – like this week.

* Give your azaleas, gardenias and camellias a boost with chelated iron.

Mum
Trim chrysanthemums back after they're finished blooming.
* After they bloom, chrysanthemums should be trimmed to 6 to 8 inches above the ground. If in pots, keep the mums in their containers until next spring. Then they can be planted in the ground, if desired, or repotted.

* Prune non-flowering trees and shrubs while dormant.

* Plant spring bulbs including daffodils, crocuses, hyacinths, tulips, anemones and scillas.

* Seed California wildflowers such as poppies, penstemon and lupine.

* Plant sweet pea, sweet alyssum and bachelor buttons.

* Trees and shrubs still can be planted now. This gives them plenty of time for root development before spring growth. They also benefit from fall and winter rains.

* Set out cool-weather annuals such as pansies and snapdragons.

* Lettuce, cabbage and broccoli also can be planted now.

* Plant garlic and onions.

* Harvest persimmons and pomegranates.

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Garden Checklist for week of June 8

Get out early to enjoy those nice mornings. There’s plenty to keep gardeners busy:

* Warm weather brings rapid growth in the vegetable garden, with tomatoes and squash enjoying the heat. Deep-water, then feed with a balanced fertilizer. Bone meal or rock phosphate can spur the bloom cycle and help set fruit.

* Generally, tomatoes need deep watering two to three times a week, but don’t let them dry out completely. Inconsistent soil moisture can encourage blossom-end rot.

* It’s not too late to transplant tomatoes, peppers or eggplant.

* From seed, plant corn, melons, pumpkins, radishes, squash and sunflowers.

* Plant basil to go with your tomatoes.

* Transplant summer annuals such as petunias, marigolds and zinnias.

* It’s also a good time to transplant perennial flowers including astilbe, columbine, coneflowers, coreopsis, dahlias, rudbeckia, salvia and verbena.

* Feed camellias, azaleas and other acid-loving plants. Mulch to conserve moisture and reduce heat stress.

* Cut back Shasta daisies after flowering to encourage a second bloom in the fall.

* Trim off dead flowers from rose bushes to keep them blooming through the summer. Roses also benefit from deep watering and feeding now. A top dressing of aged compost will keep them happy. It feeds as well as keeps roots moist.

* Pinch back chrysanthemums for bushier plants with many more flowers in September.

* Tie up vines and stake tall plants such as gladiolus and lilies. That gives their heavy flowers some support.

* Dig and divide crowded bulbs after the tops have died down.

* Feed summer flowers with a slow-release fertilizer.

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