Our favorite annuals for summer color have returned! Warm-season edibles can be planted mid-month once nighttime temperatures average in the 50s and soil warms up to 60ºF.

For Fresh Color

Update your curb appeal with showy summer color! Refresh landscape plantings and patio and/or deck pots.

Choose annuals to fill space between young shrubs and perennials, compete with weeds, and keep the yard in bloom: bacopa, begonias, coleus, geraniums, impatiens, marigolds, million bells, petunias, red bananas, snapdragons, sweet potato vine, tender fuchsias, petunias, verbena, zinnias

Choose perennials for color that returns year after year. Plant in spring to get them established before the heat of summer.

  • Long-bloom season or showy flowers: peony, echinacea, geum, hardy fuchsia, hardy geranium, lilies, wallflowers
  • Stunning foliage for drama and texture: brunnera, heuchera, pineapple lilies, hostas, ferns, ornamental grasses

For the Lawn & Landscape

Improve soil health and texture with soil amendments.

  • Soil builder boosts probiotics (add before or during planting): Harvest Supreme, Worm-Gro (worm castings), Malibu Compost
  • Soil building conditioner breaks up clay soils; top off low levels in raised beds with G&B Raised Bed & Potting Mix and/or G&B Harvest Supreme for an extra kick

Plant shrubs to complement perennials and get them established before the heat of summer:

  • Blooming: azaleas, hydrangeas, lilacs, rhododendrons, roses
  • Colorful foliage: barberry, euonymus, Mexican orange

Monitor and treat rhododendrons and azaleas for lace bugs and root weevil damage; roses and fruit trees for black spot.

Fertilize lawn with G&B Lawn Fertilizer. Hand pull or kill broad-leafed weeds with Bonide Weed Beater Ultra before reseeding bare patches. Use Bonide MoleMax for gopher and mole issues.

Fertilize trees and shrubs if they have not yet been fed:

  • G&B All Purpose Fertilizer for trees, shrubs, and perennials that are prized for their foliage
  • G&B Rhododendron, Azalea & Camellia Fertilizer for shrubs listed, plus conifers, maples, and blueberries (prefer acidic soil)
  • G&B Citrus & Fruit Tree Fertilizer for citrus and other heavy feeding, acid-loving plants (gardenias) and for foliage/flower production and a bountiful harvest with fruit trees and berries
  • G&B Bud & Bloom Fertilizer to promote ample, luscious blooms in shrubs, perennials, and annuals
  • G&B Tomato, Vegetable & Herb Fertilizer for all edibles including perennial vegetables and herbs (high in calcium)
  • Fertilize hydrangeas to encourage vigorous growth and lush blooms. To make/keep flowers pink, add lime to soil; for blue flowers, add aluminum sulfate or Hydrangea Blueing Formula.

Prepare and prime your irrigation system for summer watering. Call our landscape office at 503.777.7777 for assistance.

Basic Pruning List

Remove spent flowers before seeds form on spring flowering bulbs (tulips, daffodils); wait for foliage to yellow before cutting to the ground.

Deadhead rhododendrons and azaleas just after bloom by removing flower clusters; snap at the natural break point just above where new leaves emerge. Now is the best time to prune for shape; pruning after bloom ensures an unaffected flower set for next year.

Hard prune durable, spring flowering shrubs (lilacs, forsythia, flowering quince) after bloom to remove dead wood, control size, and maintain shape. Regular thinning every 2–3 years should also be done to encourage fresh growth and reduce disease potential.

For the Edible Garden

It’s time to plant edibles! After April 15th (average last frost date in the PNW), it’s mostly safe to plant outdoors:

  • Tender and tropical herbs: basil, cilantro, dill, tender sages, lemongrass, lemon verbena
  • Vegetables (seeds): beets, melons (end of month; watch soil temps), carrots, corn, cucumbers (end of month), kale, leeks, peas, potatoes, radishes, snap beans
  • Vegetables (starts): broccoli, cabbage, cauliflower, celery, eggplant (end of month), lettuce, onion, parsley, peppers (end of month), pumpkin, squash (mid month), tomato

Lime provides calcium to soil, ensuring a productive harvest. Apply to garden beds for cucumbers, eggplant, melons, peppers, pumpkins, tomatoes, spinach, summer squash, and winter squash.

Monitor fruit trees for signs of pests; place traps for coddling moths in apple trees and plan for control if moths are found.

For the Indoors

Establish a regular maintenance routine of watering, fertilizing, rotating plants, and inspecting for pests.

Take houseplants outside on a mild day for some natural light and even a shower to clean the leaves. Be cautious of burning foliage with intense sunlight or frosty temperatures; bring tender plants inside at night.

For Fun

Celebrate Mother’s Day with a colorful hanging basket, healthy blueberry bush, or lovely rose plant about to bloom. And be sure to check out our article on alternative gift ideas for Mother’s Day this year!

Pin It on Pinterest

Share This