UCANR

Monthly Garden Checklist and Planting Guides

June in the Garden

Checklist

  • Green and orange tomatoes on stake with garden in background.

    Check drip irrigation system. Repair as needed.

  • Deeply water squash, tomatoes, melons, and cucumbers.
  • Water early in the day to minimize diseases and conserve water.
  • Water shrubs and trees slowly and deeply at the drip line.
  • Trees less than 1-2 years will need watering at 7-10-day intervals.
  • Keep Compost Pile as damp as a wrung-out sponge.
  • Re-mulch trees; keep 6 inches away from trunk.
  • Keep fertilizing roses; mulch to conserve water.
  • Apply chelated iron to yellowing leaves with green veins.
  • Give second feeding to camellias and azaleas.
  • Monitor squash bugs on cole crops and squash.
  • Use a strong blast of water or insecticidal soap for aphids.
  • Check roses for rust; spray with fungicide according to label.
  • Check for Saucer size brown patches in lawn that maybe web worm moths.
  • Tie vines to trellises; stake tall bloomers (such as dahlias) before they topple.
  • Dig and divide crowded bulbs; allow to dry before replanting.

    (Photo by Sadettin Dogan on Pexel)

Planting Guide

Vegetables & Herbs

  • Swiss chard
  • Start seeds in greenhouse or cold frame for Brussels sprouts.
  • Directly seed cucumbers, corn, green beans and melons.
  • Transplant seedlings or purchased plants of sage, basil, tomatoes, pumpkins, squash, cucumbers, onions, celery, sweet potatoes, corn, beans and melons.
  • Harvest onions. shallots, carrots, potatoes, chard, beets and early corn varieties

Bulbs and Flowers

Orange gaillardia, lavendar catmint and lambs ear in garden.
  • EXTERNAL IMPlant warm weather annuals such as cosmos, globe amaranth, annual penstemon, portulaca, verbena, and zinnias.
  • Plant heat tolerant perennials such as gaillardia, gentian, and rudbeckia. They will do well if properly watered until established. (photo by Paula Haley)

Trees and Shrubs

  • Observe summer performance of trees and shrubs that are of interest prior to the Fall planting season.

Source URL: https://www.ucanr.edu/site/uc-master-gardener-program-yolo-county/monthly-garden-checklist-and-planting-guides