June Gardening Checklist

By thewriteDuffy •  Updated: 06/07/24 •  5 min read

There are plenty of reasons to celebrate June, but let’s start with just one: It’s summertime.

The solstice isn’t until June 21, but not all plants know that.

Lots of gardeners have already begun their summer planting and maintenance.

A good way to start is to plant extra bulbs now for a burst of brightness later in the summer, when some of your early favorites have begun to fade. Dahlia, gladiolus, canna, crocosmia, tuberous begonia and tigridia are all good choices for a touch of garden drama.

Now that the weather is warmer, you can lower your water bills and impress your neighbors by watering at cooler times of day to prevent quick evaporation.

In many climates, early June isn’t too late to put annual seeds or seedlings in the ground. Plant sunflower, marigold, cosmos, sweet alyssum and zinnia. You can also plant seedlings of geranium, impatiens, petunia, coleus and Madagascar periwinkle; by now, the ground in most regions is ready for even the most tender vegetables and flowering annuals.

Annuals that have already bloomed should be deadheaded when the flowers fade.

‘Color Spots’

For splashes of color in early summer, select bright nursery annuals already in bloom. They’re a great solution for the time-challenged gardener, and it’s more pleasant doing “dirty work,” such as dividing perennials and planting seeds, when you’re surrounded by chocolate cosmos and scarlet impatiens.

Plant color spots of annuals — usually sold in 4-inch, 6-inch or 1-gallon pots — to accent your garden with instant brightness. Be sure to water plants before removing them from pots, and water again after planting.

Perennials

Perennials are June-perfect planters.

Plant flowering perennials of all kinds for late-spring, summer and fall blooms: Oriental poppy, foxglove, salvia, aster, columbine, delphinium, feverfew and heuchera are but a few. Add lamb’s ears, sage or dusty miller for foliage.

Perennials that flowered in the spring can be dug up and divided now to prevent overcrowding. Divide irises (whose rhizomes will need to be cut apart), Oriental poppies, primroses and Doronicum daisies.

Starting now and over the next few months, you can also free those perennial seeds from their packets and get them in the ground. Pinch off spent blooms to keep flowers coming.

Lawn Care

The contest for greenest lawn on the block is far from over. By now you’ve surely been out mowing and have possibly reseeded, so keep up the good work.

Vegetables and Herbs

In most climates, all herbs can be planted this month. And now’s the time to get veggies in the ground that you can enjoy on your table in the months to come.

Fertilizing

If you see signs of winter’s ravages on trees, shrubs or perennials, run — don’t walk — to give them extra food or correct problems such as mildew, black-spot and aphids.

Permanent Plants

In many areas, June is a good time for planting trees, shrubs, vines and ground cover. Check with your local extension agency or consult a reliable gardening book to see which species are best suited for early summer planting in your zone.

Fruit Trees

Take care of fruit trees now to make sure you get your sweet rewards later in the season.

Pest Control

Don’t let down your guard yet with slugs and other garden pests.

Almost July? Just Want to Keep Going?

Don’t worry, we’ve got a fresh checklist for you of July gardening tasks too, jump over to our July Gardening Checklist now!

thewriteDuffy

At home, April is a mom, wife, and DIY darling. Among other home projects, she helped her husband Dan renovate their 1986 bungalow and is currently designing and decorating the 2023 custom home they are building themselves. Professionally, April is a writer, author, and online marketer with 15 years of experience writing for newspapers and magazines, building online authority websites, and publishing books.