June | Mariposa County

What to Plant in June

It is getting late, but: beans, beets, corn, cucumber, melons, parsnip, peppers, pumpkins, radish, all squash, tomatoes.
Gladiola corms every 2 weeks.
Dahlias.

Eggplant, peppers, tomatoes.
Annuals: ageratum, bachelor buttons, celosia, cosmos, impatiens, lobelia, marigold, petunia.

Thin apples when 1/2 inch in diameter.
Mow for general cleanup and fire protection.
Mulch garden beds to retain moisture and encourage deep roots by deep and infrequent watering.
Check sprinklers and drip systems for needed repairs and adjustments.
Water early in the day to conserve water and minimize plant disease.
Pinch back tips of chrysanthemums, fuchsias, marguerites.
Tie up vines and stake tall growing dahlias, gladiolas, and lilies.
For continued bloom, cut off spent flowers.
Hang strips of foil or CDs in fruit trees to help deter birds.
First summer pruning for stone fruit.
Thin grapes.
Dig and divide crowded bulbs if the tops have died down.
Give your indoor plants a bath.
Place a 1-inch board under pots sitting on pavement to insulate them from radiated heat.
Thoroughly clean debris from ponds, fountains and bird baths.
Check dates of Master Gardener classes.

Strawberries (end of May).
Cane berries after harvest.
Azaleas, camellias, rhododendron and acid-loving plants.
Roses at bloom start.
Citrus, monthly.
Corn: nitrogen when knee high.
If you did not use slow-release fertilizer for summer bloomers, give them a feeding now.
Fertilize vegetables monthly.
Feed indoor plants with slow-release fertilizer.
To control corn earworms, apply 20 drops of mineral oil to the silks 3-7 days after silks appear.
Monitor stink bugs on tomatoes, squash, etc. Hand pick.

Apples and pears for codling moth. First treatment when fruits are 1/2 to 1 inch in diameter. For timing use codling moth traps.
For codling moth control, attach 4-inch corrugated cardboard bands around tree trunks in early May; in late May or early June remove and destroy bands to kill the larvae and pupae found in the cardboard.
Check for citrus scale and control with horticultural oil. Encourage natural enemies and protect trees from ants.
If needed, apply Tanglefoot around tree trunks to deter ants and other crawling insects.
Pears, except Comice: weak copper spray when in bloom, one to three applications for fireblight.
Check roses for black spot, mildew and rust and spray if needed.
Check roses for aphids; control with a strong spray of water or insecticidal soap.
Spray for peach leaf curl.
Note: all effective insecticidal sprays kill bees and other beneficials. Do not spray while trees are in bloom.