June Garden Guide: Seeds to Sow & Tasks to Tackle

Introduction:

June is the sweet spot of the gardening season—when early spring efforts begin to flourish, and the promise of summer abundance takes root. Whether you’re sowing another round of greens, filling in flower beds, or finally transplanting those heat-lovers, there's plenty to keep your hands in the soil and your heart in the garden.

My June has already been filled with peas, peonies, garlic scapes and so much more! The garden is building momentum and my beds are bursting with flowers and food.

In this month’s garden guide, you’ll find:

• A full list of vegetables, herbs, and flowers to sow in June

• Key garden tasks to prioritize—from weeding and watering to propagation and pest patrol,

• And a simple, at-a-glance checklist to keep your garden healthy, productive, and joy-filled all month long.

Let’s dig in! 🌱

🌱 Seeds to Sow in June

Direct‑sow outdoors

Vegetables & Greens
Alyssum, Arugula, Barley, Basil, Bush & Pole Beans, Drying Beans, Beets, Broccoli, Buckwheat, Cabbage, Carrots, Celeriac (winter), Corn, Cucumbers, Dill, Endive & Radicchio (fall/winter), Fennel, Kohlrabi, Leeks (winter), Lettuce, Mustard Greens, Oats, Parsley, Parsnips, Pumpkins, Rutabaga (after June 21), Scallions, Sorghum, Spinach, Squash, Swiss Chard, Turnips, Zucchini

Herbs & Flowers
Chives, Cilantro, Cosmos, Crimson Clover, Cynoglossum, Gypsophila, Iberis, Nasturtiums, Oregano, Pansies, Phacelia, Sunflowers, Yarrow, Zinnias 

Inside seed-starter

Start these plants indoors now:

• Brussels Sprouts (for autumn/winter harvest)

• Cauliflower (for fall harvest)

• Overwintering Onions (sow late June, transplant in August)

• Purple Sprouting Broccoli (transplant in August for winter/spring harvest) 

🌼 Garden Tasks for June

Use these essential tasks to maintain a healthy, productive garden:

General maintenance

• Weeding & mulch: Regularly remove weeds and apply mulch to retain moisture and suppress weeds Deep watering: Aim for thorough weekly watering to encourage deep root systems—avoid light daily watering .

• Watch for pests: Regular inspections help catch aphids, caterpillars, slugs, etc. early .

Plant care & propagation

• Pinch back herbs like basil, mint, oregano, and savory to promote bushier growth 

• Fertilize roses after their first flush fades to encourage reblooming 

• Take softwood cuttings (e.g. spirea, lilac, viburnum) early June for new plant propagation 

Planting & transplant chores

• Transplant tender seedlings like tomatoes, beans, squash, pumpkins, and sweetcorn into the garden 

• Plant companion flowers: sow nasturtiums, marigolds, borage, sunflowers, cosmos and more to attract beneficial insects Succession sowing: continue sowing warm-season crops in intervals for extended harvests .

🗓️ June Garden Checklist – At a Glance

📝 Wrapping It All Up

June is when the garden truly comes alive! With a mix of direct sowing, indoor seed starts, and ongoing garden chores, your plot will be bursting with life and productivity. The combination of edible and ornamental plantings ensures there's food to harvest and beauty to enjoy—and lots of pollinators to support.

Your June gardening plan:

1. Sow: wide variety of veggies, herbs, flowers

2. Care: mulch, water, prune, fertilize

3. Maintain: monitor pests, succession sowings, propagate

4. Enhance: raise beds, pollinator plants, lawn care

Follow this guide and your June garden will be a flourishing hub of colour, flavour, and biodiversity. 

I invite you to join me on YouTube for a tour of my urban garden to see what is growing! Don't forget to subscribe when you pop by.

Happy gardening!

Erin xo