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June Gardening To-Do List for the Pacific Northwest

June is here in just a few days and with it comes warm, breezy summer days. Spring gardening season may be over, but that doesn’t mean you can get too complacent with your gardening! Before we shake the dust off our lawn chairs and lounge in the sun, there is still plenty of June gardening tasks to do, plants to sow and fruits and veggies to harvest. So, with further ado, here is the Pacific Northwest gardening to-do list of tasks you should tackle before you enjoy the summer sun to ensure your flourishing garden continues to produce and bloom at its best in the next few months.

• Plant fall-blooming perennials
• Set out seedlings of warm-weather vegetables and late-summer flowering annuals
• Still not too late to plant more spinach, lettuce, carrots, or cilantro
• Plant seedlings of heat-loving vegetables such as melons, peppers and pumpkins in warmer areas, in zones 7-9

Plants newly in bloom this month include lilac, ninebark, Japanese snowbell, and heathers. For more information about June-blooming flowers, ask a residential landscaping service for knowledge and expertise.

• Mulch flower and vegetable gardens to conserve water (zones 6, 7)
• Replace mulch and air out soil in permanent potted gardens (zones 7, 8, 9)
• Add a layer of mulch around newly planted trees and shrubs (zones 8, 9)

• Add bone meal and alfalfa to roses
• Add eggshell to treat tomatoes inflicted with blossom-end rot
• Begin fertilizing vegetable plants as they start to flower (zones 7,8)

Bone meal provides calcium, which helps protect roses against aphids. Alfalfa stimulates healthy new canes to grow.

• Remove any dead blooms from late spring and early summer bloom to maintain tidiness and to promote continued blooming season for perennials and shrubs
• Prune vines after they’ve flowered (zones 6, 7)
• Thin out small green fruits on apple, peach, and plum trees to one fruit for every 6 inches on the branch (zone 6)
• Lightly prune tips of blackberries
• Prune azaleas, lilacs, and rhododendrons after they bloom (zone 6)
• Cut back diseased or spindly branches from spring-flowering shrubs

Harvest ripe fruits and vegetables off plants twice a week. This will sustain healthy growth and abundant produce.

Zone 9
Areas of the Pacific Northwest that reside within garden zone 9 should also perform additional gardening tasks such as:
• Apply an acid fertilizer to alkaline-sensitive trees to prevent alkaline burn
• Deep soak and fertilize fig and avocado trees and mulch heavily to protect roots
• Protect trunks of young trees from sunscald by applying tree wrap or white latex paint
• Set out shallow dishes of water and overripe fruit to attract butterflies

To learn more about garden zones and zone specific gardening, refer to your local residential landscaping services or gardening blog.

Fresh Strawberries
If you planted strawberries earlier in the year, now is the time that your plants will be yielding their succulent fruit for the picking. To achieve the most abundant harvest from your strawberry plants, harvest ripe berries three times a week. Take note of any plants that are producing poorly and remove them at the end of the season. If any baby plants are beginning to form on the end of runners, transplant them into new planter for fruit next years.

Rose Maintenance
Roses may be present in many gardens, but they need regular care. Maintain the health of your roses by:

• Picking off any leaves with black spots
• Removing aphids with insecticidal soap
• Pruning once-blooming roses after they’ve flowered
• Continue to fertilize roses and treat with fungicide as needed

So finish those necessary gardening tasks for the month of June, and then reap the reward of beautiful summer days and an abundant garden harvest. If you have questions about which flowers and shrubs you can plant during the summer, residential landscaping services can help you pick blooms that will continue to make your garden look beautiful. Not only will they advise you with planting, but residential landscaping services can also assist you with pest and fungus prevention or other landscaping maintenance to ensure your garden stays healthy, as well as beautiful. For excellent residential landscaping services in Olympia, WA, call Oliver’s Landscaping.



I highly recommend Oliver’s landscaping. Oliver Olszewsky’s ability and competence to address a variety of landscaping tasks and challenges along with his knowledge of plant material and flexibility would be an asset to any project.

- Heather Alejandro, Facility Management, Callison Inc.

 I was so pleased, and surprised, when Allen showed me the beautiful blue spruce that you gave to us.  It really finishes that corner, and we will enjoy it for all the years that we live in this house, and will think fondly of you and your kindness.

- Sharon Hayward