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Dig In: Checklist for week of March 17


Buttercup oxalis has a leaf like a shamrock.
This edible weed is a sure sign of spring.
(Photo: Courtesy Wikipedia)
Warm St. Patrick’s Day brings out spring green


Can you feel the green? With warmer weather, it’s only appropriate during St. Patrick’s Day weekend that our gardens seem to be greening up before our eyes.

While all that almost-spring growth is wonderful, it also attracts aphids. Knock them down with a strong spray of water from the hose. These soft-bodied critters can’t survive the fall.

Also troublesome now are quick-growing weeds. They’ll crowd out your newly sprouted veggies if you let them. Instead, pull those unwanted plants while they’re young. In particular, keep an eye out for bind weed. That morning glory cousin only gets tougher to eradicate if it gets a roothold.

One weed seems almost appropriate for St. Paddy’s Day:
Buttercup oxalis . This common bright-yellow flower has a leaf that looks a lot like a shamrock.

Also known as sourgrass, Bermuda oxalis or African wood-sorrel , this pretty but obnoxious oxalis appears after winter rain, then disappears as weather heats up. It’s actually an edible green and tastes a lot like sorrel (it’s a member of the wood sorrel family). A few shamrock-shaped leaves add a lemony edge to a salad. (Note: Like all oxalis, this plant contains oxalic acid, which can be toxic in large doses.)

With so much growth, your spring garden has worked up an appetite. Here’s what else you should keep an eye on this week:

*Feed camellias at the end of their bloom cycle. Pick up browned and fallen flowers to help contain petal blight.

* Feed citrus trees, which are now in bloom and setting fruit. To prevent sunburn and borer problems on young trees, paint the exposed portion of the trunk with diluted white latex (water-based) interior paint. Dilute the paint with an equal amount of cold water before application.

* Feed roses with a balanced fertilizer (such as 10-10-10, the ratio of nitrogen, phosphorus and potassium available in that product). If pruned in January or February, they’re now forming their first blooms of spring.

* Prune and fertilize spring-flowering shrubs and trees after they bloom. Try using well-composted manure, spread 1-inch thick under the tree. This serves as both fertilizer and mulch, retaining moisture while cutting down on weeds.

* Seed and renovate the lawn (if you still have one). Feed cool-season grasses such as bent, blue, rye and fescue with a slow-release fertilizer. Check the irrigation system and perform maintenance. Make sure sprinkler heads are turned toward the lawn, not the sidewalk. Remember: Sacramento is now under two times-a-week watering rules.

* In the vegetable garden, transplant lettuce and cole family plants, such as cabbage, broccoli, collards and kale.

* Seed radish, chard and beets directly into the ground. Plant onion sets.

* Harvest cabbage, broccoli, kale and lettuces before warm weather makes them go to seed.

* Plant summer bulbs, including gladiolus, tuberous begonias and callas. Also plant dahlia tubers.

* Shop for perennials. They can be transplanted now before the weather heats up.





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Dig In: Garden Checklist

For week of March 19:

Spring will start a bit soggy, but there’s still plenty to do between showers:

* Fertilize roses, annual flowers and berries as spring growth begins to appear.

* Watch out for aphids. Wash off plants with strong blast from the hose.

* Pull weeds now! Don’t let them get started. Take a hoe and whack them as soon as they sprout.

* Prepare summer vegetable beds. Spade in compost and other amendments.

* Prune and fertilize spring-flowering shrubs after bloom.

* Feed camellias at the end of their bloom cycle. Pick up browned and fallen flowers to fight blossom blight.

* Feed citrus trees as they start to blossom.

* Cut back and fertilize perennial herbs to encourage new growth.

* Seed and renovate the lawn (if you still have one). Feed cool-season grasses such as bent, blue, rye and fescue with a slow-release fertilizer. Check the irrigation system and perform maintenance. Make sure sprinkler heads are turned toward the lawn, not the sidewalk.

* In the vegetable garden, transplant lettuce and kale.

* Seed chard and beets directly into the ground.

* Plant summer bulbs, including gladiolus, tuberous begonias and callas. Also plant dahlia tubers.

* Shop for perennials. Many varieties are available in local nurseries and at plant events. They can be transplanted now while the weather remains relatively cool.

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