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May Gardening Checklist: 19 Tips to Keep Your Organic Garden Healthy in May

December 12, 2019

Welcome to our monthly series what to do in your garden. This month is May and we’ve got a busy month ahead of us. Mother’s Day comes in May and if there’s any moms in your family that are also gardeners, I highly recommend you look at a selection of gloves at We’ve got waterproof gloves, rose gloves, thorn gloves, lumber cutting gloves, check it out and take care of the mom in your family. I know we spoke about keeping up with the weeding last month, but that’s an every month event. Be sure and check out our video How to Control Weeds Organically, you’ll find a lot of tips to make weeding easy. May is usually warm enough here in Northern California to put out our warm weather transplant starts, Tomatoes, peppers and eggplant. Start by hardening off your plants. What we mean by this is take your seedlings to a protected location outside for one hour for the first day. Do this each day for a week. Add one hour for each day of the process. By the end of the week you’ll be at seven hours and the plants will be ready to be transplanted. While inside the seedling stems haven’t been exposed to winds. Plants, like humans, need to start our workouts and gradually increase the intensity to become strong. Play it safe and keep some Agribon row cover on hand to protect from some surprise May frosts. If your soil is in need of a little boost before you plant your transplants you can apply a little bit of this All-Purpose Vegetable Fertilizer or some of the Chappy’s Soil Inoculant. Get out your soil thermometer and if the soil is warm enough you can direct seed a lot of your seeds. Many seeds like cucumbers, melon and squash need soil temperature about 70 degrees, but all of the important information is on the seed packs or online at If you haven’t already done so be sure and check all your irrigation. Check the batteries and your timers. Check your drip lines for leaks. Make sure that everything is working perfectly so that when you start your garden it’s ready to be watered. It’s a good time to check for pests like aphids, cabbage worms and use the appropriate sprays or sticky traps or beneficial insects. At we have a Pest Control Solution Chart which is very very helpful on the first page of our pest control category. If you planted onions and garlic last fall now is the time to peel back the mulch and give them their first shot of fertilizer. Look for telltale signs of voles, moles and gophers. And set out some traps if necessary. Check out our How to Control Gophers Organically video for a lot of really good tips. Prune off any spent flowers from your flowering shrubs. This is especially important for lilacs because the new growth is going to come right where the old flower was. May is a time to fertilize your blueberries and other acid loving plants with this Acid Mix. If your spring blooming perennials have stopped blooming in May it’s a great time to divide them. Check out our video on How to Divide Perennials. Take care of the bare spots in any lawn that you might have. Lawn Restore and the Dr. Earth Lawn Fertilizer are great additions as well as reseeding bare patches. This Earthway seeder is a great way to spread it all. Check out our Organic Lawn Care video for lots more tips. Inspect your outdoor furniture for unwanted creatures living underneath and it’s the time where the stinging insects are going to start bothering us. Be sure and have something on hand and handy just in case. Be sure and install some bat houses invite the bats to your property so that they’ll eat thousands of mosquitoes every night. And May is not too late for successional planting of early spring crops such as radishes and greens. Check your roses for disease and give them a dose of fertilizer, Flower and Rose fertilizer works great. If you’ve had grasshopper problems in the past or if your vegetable garden is close by to a grassy pasture you may have grasshopper problems in the future. This is a Nolo Bait which is a suppression for grasshoppers. You can put it on a little bit early in the season, like in May. As with all pesticide products be sure and follow all the directions completely, read the label carefully, and wear your protective gear. And most importantly don’t forget to enjoy your garden in May and grow organic for life!


  • Reply SAMSUNG 2019 May 3, 2017 at 11:45 pm

    frist hi I have done everything you said thanks and grow organic for life

  • Reply James White May 4, 2017 at 7:41 am

    I live just SE of Atlanta . This ""Winter" was so warm, I got Mosquito bit at least twice a week, straight through!
    Great Tips! Thanks Much!

  • Reply Cate's Garden May 4, 2017 at 5:50 pm

    Love those lilac-colored gloves. I always get something gardening-related for Mother's Day. 😀

  • Reply Будни Фермера May 11, 2017 at 4:52 pm

    Cool video and channel! If it's interesting to look at me on the channel, I'm a girl farmer and a beekeeper from Russia =)

  • Reply 3v3 May 12, 2017 at 6:07 am

    thank you. We love your website. we're in Zone 10b. Will have to look up what kind of fertilizer onion needs…

  • Reply JD Tan May 13, 2017 at 3:51 am

    What a great video!

  • Reply martin May 14, 2017 at 6:27 am

  • Reply Two Family Homestead May 21, 2017 at 5:11 pm

    Great video – we're in Ohio zone 6 (I think lol ) and have had a garden for 4 years (moved to this place 5 yrs ago) – it's not organic but we DO NOT use anything but water, egg shells, epson salt in our garden, put cardboard down then cover with mulch, leaves and/or grass clippings (oh and we do have a composter). I've subscribed and would like to invite you over to check our place out 🙂 We have live streams every Monday night at 9pm – maybe you could consider being one of our "guests" one Monday night?

  • Reply R Dy June 3, 2017 at 5:56 am

    Thanks for the tips!!! I have an abundance of grasshoppers this year..more than I've ever seen before…and my trusted old groundhog friend is happily living in my back yard…I will look into the products you shared to keep them at bay. Thanks again for the information!!!

  • Reply Cynthia Mayo April 7, 2018 at 3:17 pm

    Do potatoes count as a summer plant I live in Arizona and I would like to plant some summer plants and it gets really hot in Arizona

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