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Love to Garden? Here’s Your May ‘To-Do’ List!

Love to Garden? Here’s Your May ‘To-Do’ List!

May is the month to get out in the garden! To help plan for the season, I’ve put together this guide—what to plant, harvest and care for during this month.

Here in the northwest suburbs of Chicago, our frost-free date (the last average date of a frost) is May 15th. You can adjust the timing of your “to-dos” by looking up your own frost-free date and adding or subtracting weeks as appropriate. There are many sources for frost-free dates on the Internet—I like to use the Farmer’s Almanac version, which also provides information about planting with the moon cycles (waxing and waning–another post!). We’ve already been planting cool season annuals and vegetables in April and by the end of May we begin to plant warm season flowers and crops in the ground outdoors.

May gardening tips on this week’s Green Divas in the Garden episode:

 

Plant “To-Do’s”

Trees and shrubs, ground covers, vines, grasses

Path in blooming garden This year especially (we’re having cool weather longer than usual), there’s still time to plant trees and shrubs, ground covers, grasses and most vines. This gives them time to establish roots before the heat of summer comes on. Be sure to water all new plants carefully as needed for at least the first year and two years for trees and large shrubs. This is also a good time of year for us to aerate our lawns (we have cool season turf grasses).

Vegetables and fruit

We’re just about to do our second planting of peas, beets, carrots, lettuces, radishes and spinach. This is a good time to plant bare-root strawberry plants for fruit next year and thereafter. Early in the month you can still plant onion sets, early potatoes, asparagus crowns and shallots.   At the end of the month, when the soil temperature exceeds 60 degrees F, plant tomatoes, peppers, eggplants, cucumbers, beans, squash and corn. You can plant seeds outdoors or purchase seedlings for transplants. Plant beneficial companions to promote natural pest control and add beauty to the vegetable garden. For example, marigolds are said to repel pests near tomatoes.

Herbs

Plant seeds of annual herbs in pots indoors at this time of year for transplanting to the garden. These include basil, chamomile, borage, dill and cilantro. I usually also plant nasturtiums in the herb garden along with Johnny Jump-ups since they are both edible.

Perennials

Peony in bloom

When planting either new or divisions of existing perennials, be sure to prepare the soil well since the plants will be there for a long time. Do not divide spring blooming perennials until after they bloom. Did you know you could plant your Easter lily in the garden after the frost-free date? Keep the leaves growing and it should bloom next June in your garden. I have several from previous years. I just have to beat the deer to the flowers.

Annuals

We planted annual sweet peas, cleome, poppies, calendula, alyssum and baby’s breath late April/early May. After the soil warms up later in the month and into June we’ll plant zinnias, cosmos, scarlet runner beans (vine), gourds (especially birdhouse and luffas) and amaranth.

 

Harvest “To Do’s”

Early in the month we’re harvesting rhubarb, asparagus, lettuce, radishes and garlic chives. We cut flowers and foliage for the house and offices too, and May is an easy month with lilacs and spring-flowering viburnums blooming.

 

Care “To Dos”

pathfoxgloves

Perennial foxgloves and ladies' mantle

  • Edge planting beds to keep turfgrass from creeping into them.
  • Weed now to get control of weeds. You can still see where the roots are and remove them before they get too large and, more importantly, before they reproduce by going to seed or spreading underground.
  • Fertilize by adding compost under new plantings, divisions and consider a top-dressing of compost on established beds of perennials as natural fertilizer and soil conditioner.
  • Water seedbeds if rain is not keeping the soil moist.
  • Prune flowering shrubs like lilacs soon after flowering so you’re not removing next year’s flower buds. If you haven’t already, prune out raspberry and blackberry canes that bore fruit last year. Begin pinching the top 1-2 inch tips of your hardy mums so they’ll turn into round mounds by the end of the season. You’ll do this every two or three weeks until the 4th of July.
  • Tie clematis and other vines onto structure for support. Stake tall blooming plants that require it (delphiniums, for example.)

Control Pests/Diseases

The best care is a walk around the garden every morning and evening (preferably with a cocktail). Catching a problem early is the best way to control it. So is prevention. For example, protect carrots and cabbage with row covers to exclude cabbage root maggot and carrot rust fly.  Put deer netting up over phlox, yew, hosta and other susceptible plants. Have insecticidal soap ready (make sure it’s eco-friendly!) if you see aphids. These are just a few of the many chores you will have in May. An investment of your time and attention now will yield healthy plants, fruits and vegetables in the weeks to come. robinsnest

Any questions about May gardening—or anything about gardening? Please feel free to write me! ~ Green Diva Ali

Catch the full Green Divas Radio Show here:

Written by Green Diva Ali (Alison Hoffman) for The Green Divas.
Main image by shutterstock.

Flower images by Alison Hoffman, Every Green Plant (Green Diva Ali)

Related posts by The Green Divas:

15 Plants to Help Save the Bees

3 Gardening “Do’s” After a Late Spring

5 Tips for Having a Green Diva Spring Garden


Read more: Blogs, Eco-friendly tips, Green, Home, Lawns & Gardens, Nature, The Green Divas Podcast, , , , , , , , , ,

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The Green Divas share low-stress ways to live a deeper shade of green through a weekly radio show, podcasts, videos and blog posts. Working with talented partners and credible sources like myEARTH360 the Green Divas produce content on a variety of topics relating to a healthy green lifestyle. Visit The Green Divas website to learn more, and check out The Green Divas on FacebookTwitter too!

82 comments

+ add your own
12:28PM PDT on Jun 1, 2014

I agree with you, Krista!

8:46PM PDT on May 22, 2014

Thank you!

11:36PM PDT on May 21, 2014

Thank you for sharing, but the growing seasons are different throughout the U.S.

If you really don't/can't read the back of the seed packet, you can go online and look up the USDA's chart for growing. You'll learn which zone you live in and buy seeds accordingly.

Many seed packets have this zone designation on them.

11:21AM PDT on May 20, 2014

thanks

9:43PM PDT on May 16, 2014

thanks

1:46PM PDT on May 16, 2014

Add a Mason bee hive to the list, you can order one ( I just did ) from Amazon for $19.95, no S & H, all you do is hang it & the bees will come to it,we all need to do this to help the bees & the veggies & flowers!.

10:27PM PDT on May 15, 2014

thanks

6:01AM PDT on May 15, 2014

Thank you for sharing.

3:51AM PDT on May 15, 2014

Thanks!

2:45AM PDT on May 15, 2014

Or check the back of the seed packs? It doesn't even require any energy. But we might as well support the need for vast data forms so that morons who are too lazy to read the pack of seeds can figure out when to plant. I bet you then drive in a truck to pick up your pack of seeds.

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Sent to those who can use it. Thanks for posting

I do love to hear a baby laugh. Gorgeous!

So cute and it does tickle! My cat does it to dry toes!

Wow! Extraordinary research.

Very important info !!!

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