June Tips for Pnw gardeners



Your plants need water to thrive, especially anything newly planted. Even if we get some rainy days in June, it's best to start a regular watering schedule now. Learn more about best watering practices.

Prune rhododendrons and lilacs after they are done flowering. Learn more about pruning lilacs.

Mulch your garden beds with up to 3” of compost to help reduce weeds and keep moisture in the soil.

Deadhead your annual flowers to keep your plants producing new flowers. Pinching back leggy stems will also encourage bushiness.

Need help creating your summer containers? You can get personalized advice from the comfort of your home. Just post on social media with #heyswansons and we'll create a Pinterest inspiration board like this one, made just for you!





There’s still time to plant your vegetable garden. Learn more about Growing Warm-Season Vegetables in the PNW.

Did you know that flowers can not only enhance the beauty of your edible garden, but help your vegetables thrive? That beans don’t like to be planted next to onions? Learn the secrets of companion planting.

Keep basil inside on a sunny windowsill or in the greenhouse until night temperatures regularly stay in the 50's.

Be sure to continuously harvest your vegetables and fruit to encourage production. 

Apply Sluggo or crushed eggshells around strawberries and other favorite snacks of slugs. Learn more about growing strawberries in the PNW.


Houseplants are growing actively right now. Fertilize them regularly and be sure to follow the directions on the product label for best results. Learn more about the Proper Care and Feeding of Indoor Plants.

Did you keep a citrus plant indoors for the winter? Citrus benefits from an outdoor vacation in warmer weather but it is important to slowly acclimate your plant to outdoor conditions! Start by putting the plant out in the shade during the day and bringing it in at night. Then slowly increase the amount of time it is outside while also allowing it to gradually get more and more direct sun until it is full sun. This process can take up to a week or more. 

Don’t have a green thumb? We can help! Try these 5 Easy Houseplants.





You can aerate, topdress, and overseed your lawn through the month of June. Remember to keep it well watered during these activities! See Step by Step Lawn Renovation for more detailed information, and remember you can always ask #heyswansons for help!

Begin mowing regularly now. Remember, the height of the grass generally equals the depth of the roots, so keeping grass a little longer helps build a strong support system. Set your mower to medium height to avoid cutting off more than 30% at a time.

In summer, lawns need approximately 1" of irrigation per week to stay green and healthy! Even if you plan to let your lawn go dormant, water about once a month to keep it from dying back completely.

See our Lawn Calendar for more monthly tips to keep your lawn lush and healthy.


Plant Care Library

At Swansons, we’re dedicated to growing the smartest, hippest, and healthiest gardeners in the Pacific Northwest. Below is a library filled with pages on what we grow in Seattle. Just remember, we were all novices once, and no one knows it all. So enjoy, keep learning, and happy gardening!

Looking for more Pacific Northwest gardening resources? Here is a list of our community partners.