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Dig In: Garden checklist for week of May 17


Depending on how ripe they are and how intense the rain is, cherries may be damaged in the coming rainstorm. (Photos: Kathy Morrison)

Expect a soggy break in warm spring weather



Be ready for anything. That's got to be the motto for 2020 and applies (among many things) to our May weather.

For May 16-18, the National Weather Service issued a winter storm warning with snow in the passes. Here in the Valley, we're about to get soaked.

From Saturday night to Tuesday evening, Sacramento is expected to receive between 1/2 and 1 inch of rain. The foothills and areas north of Sacramento will be wetter; the forecast for Grass Valley is 2 to 3 inches. Thunderstorms and windy conditions will be part of this wild weather mix, too.
Don't forget to turn off the sprinklers.

Sacramento's average monthly rainfall for May is less than 3/4 inch; we may get all of that in this one storm. After this cold front heads east, temperatures will return to the lows 80s -- normal for mid-May.

Put off transplanting seedlings until after the storm. They could be damaged by too much wind and rain while also coping with root shock.

Add some coneflowers to the garden for color -- and for beneficial insects
and pollinators.
Meanwhile, concentrate on maintenance and a little garden TLC.
* Keep an eye out for slugs, snails, earwigs and aphids that want to dine on tender new growth.
* Also watch out for fungal diseases such as powdery mildew and rust. Remove and dispose of infected leaves.
* Feed summer bloomers with a balanced fertilizer.
* For continued bloom, cut off spent flowers on roses as well as other flowering plants.
* As spring-flowering shrubs finish blooming, give them a little pruning to shape them, removing old and dead wood. Lightly trim azaleas, fuchsias and marguerites for bushier plants.
* After the storm, there will still be time to plant tomato, pepper and eggplant seedlings.
* Direct-seed melons, cucumbers, summer squash, corn, radishes, pumpkins and annual herbs such as basil.
* Harvest cabbage, lettuce, peas and green onions.
* Keep an eye on fast-developing fruit. Cherries may be damaged by this storm system.
* In the flower garden, direct-seed sunflowers, cosmos, salvia, zinnias, marigolds, celosia and asters.
* Plant dahlia tubers.
* Transplant petunias, marigolds and perennial flowers such as astilbe, columbine, coneflowers, coreopsis, dahlias, rudbeckia and verbena.

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Garden Checklist for week of June 15

Make the most of this “average” weather; your garden is growing fast! (So are the weeds!)

* 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 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. That can encourage blossom-end rot.

* 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.

* Pull weeds before they go to seed.

* Let the grass grow longer. Set the mower blades high to reduce stress on your lawn during summer heat. To cut down on evaporation, water your lawn deeply during the wee hours of the morning, between 2 and 8 a.m.

* 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.

* Mulch, mulch, mulch! This “blanket” keeps moisture in the soil longer and helps your plants cope during hot weather. It also helps smother weeds.

* Thin grapes on the vine for bigger, better clusters later this summer.

* Cut back fruit-bearing canes on berries.

* 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.

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