Ready to get your garden summer-ready? From planting tomatoes to keeping pesky aphids at bay, our June gardening tips have got you covered. Let’s dive into some fun and effective ways to make your Pacific Northwest garden thrive this month.
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June is here, and it’s time to roll up our sleeves and dive into some serious garden magic in the Pacific Northwest, especially for those of us in Zone 8. This month is perfect for planting hot-weather crops, starting preventative sprays, and making sure your tomatoes are trellised and happy. Whether you’re a seasoned pro or just getting your hands dirty for the first time, these tips will help you keep your garden looking great and producing like a champ. Let’s dig in and see what June has in store for us!
Table of Contents:
- Plant Hot-Weather Vegetables
- Stop Harvesting Rhubarb
- Finish Flame Weeding & Burning
- Harvest Garlic Scapes
- Harvest Strawberries
- Prune Spring-Flowering Shrubs
- Trellis Tomatoes to Prevent Blight
- Enjoy Endless Salads
- Fertilize Corn
- Start Organic, Preemptive Spraying
- Get to Know Beneficial Insects
- Consider Mulching
- Keep Deadheading
- Start a Worm Composter
1. Plant Hot-Weather Vegetables
June is the perfect month for planting crops that thrive in the heat. Begin with big beefsteak tomatoes in early June, followed by cherry tomatoes around mid-month. Don’t forget to include basil, corn, zinnias, sunflowers, peppers, cucumbers, and other summer favorites. These plants love the warmth and will flourish in the summer sun.
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When can I plant tomatoes outside?
You can plant tomatoes outside once the danger of frost has passed and nighttime temperatures are consistently above 50°F. In most areas, this means waiting until after your last expected frost date, which is typically in late spring.
For the Pacific Northwest (Zone 8), early June is usually a safe bet for planting out your tomato starts. Just make sure the soil is warm enough, ideally around 60°F or higher, to give your tomatoes the best chance to thrive.
When to put pepper plants outside?
You can put pepper plants outside once the danger of frost has passed and nighttime temperatures are consistently above 55°F. Peppers love the heat, so it’s crucial to wait until the weather is reliably warm, typically a couple of weeks after your last frost date.
In Zone 8, this usually means waiting until late May or early June. Make sure the soil is well-warmed, around 65°F, to ensure your peppers get off to a strong start.
2. Stop Harvesting Rhubarb
By June, it’s time to stop harvesting rhubarb. Although the stalks remain edible throughout the summer, overharvesting can weaken the plant. Allow your rhubarb to rest and rejuvenate for next year.
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How many times a year can you harvest rhubarb?
You can typically harvest rhubarb once a year, during its peak season in the spring, which usually runs from April to June. This is when the stalks are most tender and flavorful. After this main harvest period, it’s best to let the plant rest and rebuild its energy for next year. While the stalks remain technically edible beyond this window, harvesting rhubarb more than once a year can stress the plant and reduce its productivity.
3. Finish Flame Weeding & Burning
Flame weeding is our favorite way to maintain pathways and driveways. And we’ve got quite a few burn piles for invasive weeds & diseased plants – to avoid contaminating the compost. Burn bans in our area can start as early as June 1st, so it’s crucial to finish burning before dry summer conditions set in.
Learn more about our favorite flame weeder here.
Does flame weeding work?
Yes, flame weeding definitely works! It’s a great way to keep pathways, driveways, and garden beds free of weeds without using chemicals. By passing a flame over the weeds, you damage their cell structure, causing them to wither and die. It’s especially handy for young weeds and works best on dry, sunny days. Just be careful and mindful of any burn bans or fire safety regulations in your area, especially as things dry out in the summer. It’s an eco-friendly, effective method that keeps our garden looking neat and tidy.
How long does flame weeding last?
Flame weeding is a quick and efficient way to zap those pesky weeds, but how long it lasts depends on several factors. Typically, it can keep weeds at bay for a few weeks, especially if you target young, tender weeds. But, because it doesn’t kill the roots, some weeds might come back, so you might need to reflame periodically. The frequency will depend on how fast weeds grow in your area and how persistent they are.
4. Harvest Garlic Scapes
June is the month to harvest garlic scapes, the curly flower stalks produced by hardneck garlic varieties. When the scapes reach a full curl, it’s time to cut them. Removing garlic scapes redirects energy back into the garlic bulb, promoting better growth. For more details, check out our guide on how to harvest and use garlic scapes.
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What is the best thing to do with garlic scapes?
The best thing to do with garlic scapes is to eat them! These curly, green flower stalks from your garlic plants are a culinary delight. You can use them just like you would regular garlic or green onions. They’re great sautéed in a stir-fry, blended into pesto, or tossed into a salad for a mild garlic flavor. Grilling them is another tasty option—just drizzle with olive oil, sprinkle some salt, and grill until they’re tender and slightly charred. Garlic scapes are versatile and delicious, so get creative in the kitchen and enjoy this seasonal treat!
5. Harvest Strawberries
For those growing June-bearing strawberry varieties, expect one large harvest this month. Ever-bearing varieties will start producing, kicking off your strawberry harvesting season. Enjoy fresh strawberries in your favorite recipes!
How do you know when strawberries are ready to be picked?
You’ll know strawberries are ready to be picked when they’re fully red, plump, and have a glossy sheen. Give them a gentle tug; if they come off easily with the cap still attached, they’re ripe and ready to eat. Check daily because strawberries ripen quickly and are at their sweetest when picked at peak ripeness. Also, make sure to taste one (or a few) to ensure they’re sweet and juicy—arguably the best part of harvesting!
Do strawberries grow back after being picked?
Yes, strawberries do grow back after being picked! Once you harvest the ripe berries, the plants will continue to produce more fruit throughout the growing season, especially if you have ever-bearing or day-neutral varieties. Just make sure to keep the plants healthy by watering regularly, fertilizing, and removing any old or damaged leaves. With a little care, your strawberry plants will keep giving you delicious berries all season long. So, enjoy those fresh strawberries and look forward to more!
6. Prune Spring-Flowering Shrubs
After flowering is the best time to trim back perennial shrubs like azaleas, rhododendrons, magnolias, forsythia, viburnum, and lilacs. Prune them before July 4th to avoid cutting off next year’s blooms.
When should you not trim bushes?
You should avoid trimming bushes during late summer and fall. Pruning at this time can stimulate new growth that won’t have enough time to harden before winter, making it susceptible to frost damage. Additionally, if you trim spring-flowering shrubs in the fall, you risk cutting off next year’s buds and missing out on beautiful blooms. The best times to prune are late winter or early spring for most bushes, and right after flowering for spring bloomers.
7. Trellis Tomatoes to Prevent Blight
In the PNW, the combination of cold nights, warm days, and damp conditions creates an ideal environment for blight. Trellising and properly trimming your tomatoes can increase airflow, helping to minimize the risk of blight. For more information, see our detailed guide on how to prune tomatoes.
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When to put trellis on tomatoes?
You should put a trellis on your tomatoes right after you plant them. It’s much easier to set up the trellis when the plants are small, and it helps guide their growth from the start. Early support prevents the plants from sprawling on the ground, which can lead to disease and make harvesting harder. As your tomatoes grow, tie them to the trellis loosely with garden tape or soft string to support the branches and fruit. Starting early with a trellis keeps your tomato plants healthy and makes for a cleaner, more organized garden.
8. Enjoy Endless Salads
June is peak salad season for those who planted lettuce greens around the first frost date. Harvest now before the summer heat causes them to bolt. For a unique twist, try our lettuce soup recipe.
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How do you pick lettuce so it keeps growing?
To pick lettuce so it keeps growing, use the “cut-and-come-again” method. Start by harvesting the outer leaves, snipping them off about an inch above the base with a clean pair of scissors or garden shears. Leave the inner leaves and the growing point intact, as this allows the plant to continue producing new leaves. By taking only the mature outer leaves, you give the plant a chance to keep growing and regenerating, providing you with a continuous supply of fresh greens. Just be sure not to take more than one-third of the plant at a time, and you’ll have lettuce all season long.
What lettuce varieties are cut and come again?
Cut-and-come-again lettuce varieties are perfect for a continuous harvest! Some great options include leaf lettuces like Black-Seeded Simpson, Red Sails, and Oak Leaf. These lettuces don’t form heads; instead, you can snip the outer leaves as you need them, and the plants will keep producing more. Just be sure to leave the center intact so it can keep growing. This way, you’ll have fresh lettuce for salads all season long without needing to replant. It’s super easy and convenient for a steady supply of greens.
9. Fertilize Corn
Corn is a heavy nitrogen feeder, and June is the time to start fertilizing. Use urea as an all-natural fertilizer. Hoe a trench between your rows, bury the urea, and water it in to ensure your corn gets the nutrients it needs.
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How long does it take to grow corn?
Growing corn takes a bit of patience, but it’s worth it! Typically, it takes about 60 to 100 days from planting to harvest, depending on the variety. Sweet corn usually matures faster, around 60 to 75 days, while some field corn can take up to 100 days. After planting, you’ll see sprouts within a week or two. As the plants grow, they’ll produce tassels and silk, signaling that the ears are forming. When the silk turns brown and the kernels are plump and juicy, your corn is ready to harvest. Keep an eye on the weather and give your corn plenty of water and nutrients, and you’ll be enjoying fresh, homegrown corn in no time
What is the trick to growing corn?
The trick to growing corn is all about giving it the right conditions and care. Corn is a heavy feeder, so make sure to plant it in rich, well-draining soil and keep it well-fertilized, especially with nitrogen. Plant your corn in blocks rather than long rows to ensure good pollination, which is crucial for full ears. Corn also loves water, so keep the soil consistently moist, especially during the tasseling and ear-filling stages. Lastly, be patient and watch for pests like corn earworms. If you find them, treat right away.
10. Start Organic, Preemptive Spraying
As pests and diseases begin to take hold, get ahead with proactive spraying. For most pests, mix a little soap and neem oil in water. Disease-specific sprays can help tackle any problems you encounter.
Learn more about common garden pests of the PNW here.
What actually kills aphids?
Aphids can be pesky little critters, but there are several effective ways to get rid of them. One of the best natural methods is to introduce beneficial insects like ladybugs and lacewings into your garden, as they love to munch on aphids. Although some would argue that adding insects, even beneficial ones, can compete with native populations.
You can also spray your plants with a mixture of water and a few drops of dish soap; this solution suffocates the aphids without harming your plants. Neem oil is another great option, working both as a pesticide and a deterrent. If you have a heavy infestation, blasting the plants with a strong stream of water can physically knock the aphids off.
Are slugs good or bad for your yard?
Slugs are a bit of a mixed bag for your yard. On the one hand, they do play a role in breaking down organic matter, which helps improve soil health. They munch on decaying leaves and plants, contributing to the natural composting process. However, they can also be quite destructive, especially if they get into your vegetable garden or flower beds. Slugs love to feast on tender plants, seedlings, and leaves, which can cause significant damage. So, while they have their place in the ecosystem, you’ll want to keep their population in check to protect your garden.
11. Get to Know Beneficial Insects
June brings an influx of bugs, both good and bad. Familiarize yourself with beneficial insects like rove beetles, ladybugs, ground beetles, lacewings, minute pirate bugs, spiders, wasps, and bald-faced hornets. Protect these garden allies as they help control pest populations.
Are Asian beetles harmful?
Asian beetles, also known as Asian lady beetles, can be a bit of a nuisance despite their helpful side. They were introduced to help control pests like aphids, and they do a great job at that. However, they can become a problem when they invade homes in large numbers seeking warmth in the fall. Unlike our native ladybugs, Asian beetles can bite, and they release a foul-smelling yellowish fluid when disturbed, which can stain surfaces. So, while they’re beneficial in the garden, they can be pretty annoying if they decide to move in with you.
Are green lacewings better than ladybugs?
Green lacewings and ladybugs are both fantastic garden helpers, but they have their own strengths. Green lacewings are often considered better for serious pest control because their larvae are voracious predators, devouring aphids, mites, and other soft-bodied insects like tiny monsters. They can consume hundreds of pests in their short larval stage!
Ladybugs, on the other hand, are great at pest control too, especially aphids, but they tend to move around more and might not stick around your garden as much as lacewings. Both are beneficial, but if you’re dealing with a heavy infestation, green lacewings might give you the upper hand.
12. Consider Mulching
Adding mulch helps retain moisture and suppress weeds. As summers lean towards drought conditions, mulching becomes increasingly important for maintaining a healthy garden. Also, if you stay on top of your mulch, you can significantly minimize the amount of weeding you’ll have to do next spring.
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What type of mulch is best?
Choosing the best mulch depends on your garden’s needs and personal preference. For vegetable gardens, straw or grass clippings work great because they break down quickly, adding nutrients to the soil. If you’re looking to spruce up your flower beds, bark mulch or wood chips are excellent choices—they look neat and help retain moisture while keeping weeds at bay. For a more natural look, leaf mulch is fantastic and also enriches the soil as it decomposes. Ultimately, the best mulch is one that fits your garden’s needs and helps keep your plants healthy and happy.
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13. Keep Deadheading
As spring blooms fade, keep deadheading spent flowers to prolong the life and beauty of your plants. Regularly removing spent blooms encourages more growth and vibrant displays.
How do I deadhead flowers?
Deadheading flowers is super easy and really helps keep your garden looking great! All you need to do is pinch or snip off the spent blooms just above the first set of healthy leaves or buds. Use your fingers for softer stems or a pair of clean, sharp scissors or pruners for tougher ones. By removing the faded flowers, you’re encouraging the plant to produce more blooms instead of putting energy into seed production. Plus, it keeps your plants looking tidy and vibrant.
13. Start a Worm Composter
June is a great time to start a worm composter. You can purchase premade containers or create one from a rubber tub. Turning your kitchen scraps into nutrient-rich worm castings, also known as ‘black gold’, will greatly benefit your garden.
Learn more about our favorite worm composter here.
Are worm composters worth it?
Absolutely, worm composters are totally worth it! They turn your kitchen scraps into nutrient-rich compost, also known as “black gold,” which is fantastic for your garden. Worm composters are easy to set up and maintain, and they don’t take up much space, making them perfect for small gardens or even apartments. Plus, it’s a fun and eco-friendly way to reduce waste. Your plants will thrive with the added nutrients, and you’ll feel good knowing you’re doing something great for the environment. So, if you love gardening and want to boost your soil health, give worm composting a try.
June is all about giving your garden the love and attention it needs to shine through the summer. By planting the right crops, managing pests, and keeping everything well-maintained, you’ll enjoy a lush, productive garden. So, get out there, enjoy the sunshine, and watch your garden flourish!
Happy Growing!
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