For dedicated gardeners, here are suggestions...

For dedicated gardeners, here are suggestions from the California Assn. of Nurserymen on what to do in the garden this week:

* Plant onions and leeks for summer harvest.

* To prevent worms in apples and pears, spray with diazinon as soon as flower petals have fallen.

* Check spring growth on roses and fruit trees for aphids. Spray with malathion.

* Check under trees and shrubs for suckers. These are branches that sprout directly from the root stock beneath the soil. Cut off with sharp shears or spade. Suckers can sap the tree of energy.