May Lawn & Garden Checklist

After the April showers, May brings the promise of a vibrant garden and the start to a season of an abundant harvest. The work done during the months of April and May will set the pace for the rest of the year; get off to a running start with this checklist of things to do in your lawn and garden.


  • Technician Spreading FertilizerFertilize your lawn with an organic lawn fertilizer such as the kind offered here at Natural Alternative®.
  • If you sowed grass seed this spring, continue to keep the new seedlings moist through this month; to keep seeds from drying out and dying.
  • If you laid down sod, continue to keep the new sod moist as well. Here’s a great video which gives tips on how to care for a newly sodded lawn.
  • Continue to mow your lawn only when it needs it. Avoid cutting off more than a third of the grass blades and make sure your mower blade is sharp.


  • Repot houseplants in new soil.
  • Be sure your houseplants are receiving adequate amount of light and rotate them to promote an even, full growth.

Blue Spruce TreeTree & Shrub

  • Plant trees or shrubs before the heat of summer to establish the roots. Use Protilizer® Seed & Plant Activator to prevent roots from going into shock and possibly stunting growth.

Vegetables & Fruit

  • Squash, cucumbers, eggplants, peppers, tomatoes, watermelons, and sweet potatoes can all be sown outdoors this month.
  • Know the last frost date for your plant hardiness zone. This will help you determine when is best to plant specific plants.
  • Keep an eye on a late frost and protect any plants which could be affected.
  • Continue to plant cool-season crops.Vegetables From The Garden
  • Harden off warm-season transplants by moving them into a cold frame or move them outside during the day and back inside at night until the threat of frost is gone.

Flower & Bulb

  • Finish planting summer annuals like marigolds or petunias.
  • Divide any crowded perennials.
  • Deadhead spring blooming bulbs and early spring flowers as their blossoms fade. Do not cut the foliage back. The bulb uses the decaying foliage as nutrients for next year’s flowers. Tie the foliage neatly with a rubber band if it becomes unsightly.

Maintenance & Other

  • Mother’s Day is in May! Check out our list of gifts for the gardener for some unique gift ideas.
  • Clean bird feeders and bird baths. It’s time to put out the hummingbird feeders to catch migrating birds. The permanent residents return by May 30th. Make your own hummingbird nectar with one cup of water and ¼ cup sugar. Bring it to a boil; cool; and add to the feeder.
  • Give everything a good first-of-the-season feeding, if you haven’t already, to get things growing.
  • Weed out any invasive or undesirable plants from your garden (and lawn if you like) now while the ground is still moist.
  • Create a rain barrel or invest in a similar rain collector to conserve our natural resources and save on water bills.

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Clippings from our customers

Winter is closing in fast in New Hampshire. That's ok with me, as I can't wait to go ice fishing. Hard to stay ahead of all the oak leaves coming down. The lawn looks great after the lime and the September and October applications. Can't wait to see how it looks next year. Check Out His Video

Bill J. – Bedford, NH

PROTILIZER is a great product. I first heard about it on the Paul Parent radio program. I tell everyone about it. Thanks!

Brad P, – Beverly MA

Best fertilizer I have used.

J Burnett – Lowell, MA

Lawn looks amazing

L.R. – Ashburnham, MA

We used this ice melt all winter on some difficult steps and a walk way that always ices up. I would give this product a ten star if I could.

Wayne G – Manchester, NH

I live where the soil is already high in phosphorus (the middle number) and it’s hard to find any with none locally. I buy one of these (Fall Fertilizer Application 4) each season and they are well worth the cost. My neighbors all say my yard is looking much better than under the prior homeowner.

Stacie W. – Fort Worth, TX

…The only thing better than your products are the people behind them. You [all] are the best!!

Steve D. – Merrimack, NH

We will continue to use [Protilizer & 5-5-5] with great enthusiasm. We swept the Court of Honor in every rose show where we exhibited, including the National Rose Show.

John & Cherylynn Smith, National Rose Association First Place Winner – Westminster, MD

We grow 200 varieties of hot peppers and 150 heirloom tomatoes. We used Protilizer and saw no phytophthora root disease; our crop yields were higher; we had better root development; and the plants just looked healthier than they have in years. The fact that Protilizer is organic and OMRI listed is a bonus. Thank you for your help and support throughout my trials.

James Weaver, Meadow View Farms – Kutztown, PA

I will continue to be a loyal supporter of Natural Alternative products. Your bacteria based products are unmatched in the industry.

Darryl Schultz, Bud Shultz Garden Center – Dunmore, PA

I am a vegetable and annual grower. I recently started using your Protilizer Seed & Plant Starter on my annual nursery stock. The results exceeded my expectations. My Impatiens, Petunias, Marigolds were healthy and disease free. The root development was the best I have ever seen. This year I am also trying it in my strawberry fields.

John Stoltzfus, Brandywine Produce – Honey Brook, PA

We are pleased with the results we’re getting with Protilizer on our pansy crop. We did not have any stem disease for the first time in years. Please send me another 6 jugs. We need it for our poinsettias.

Kenneth Miller, Milmont Greenhouses – Waynesboro, VA

As a grower/retailer we use Natural Alternative Protilizer and 5-5-5 plant food in our growing operations to maintain top quality plants in our retail stores. We have reduced our use of fungicides for root diseases to almost zero. During the hot summer months, our customers remark that our plants look so healthy for the middle of summer.

Jim Glick, Ken’s Gardens – Lancaster County, PA

Thank you all for your help and recommendations. I appreciate the time you spent on the phone with me to work toward a solution for my lawn. You have been a tremendous help. What terrific customer service!

J. Jackson – Columbus, Ohio

Again, I want to thank you for the awesome service you have given us this season. I very much appreciate it.

Lee Roeder, Strosniders – Bethesda, MD

The ice melt worked great! We already put some down for the storm that missed us last week, and yesterday morning when I checked the area it was covered with sleet with the exception of the areas we treated with the ice melt. [Thanks for] your quality service and the great product you provide.

Andrew C. Lee, Capitol Hill Business Improvement District – Washington, DC

We love the [Natural Alternative Ice Melt] product and have for years. We will keep pushing it!

Craig S. Co-Owner – Twins Ace Hardware, Fairfax, VA 22030

I just wanted to thank you for the great products that Natural Alternatives produces. I did cut my lawn last Saturday and got all the leaves up and early Sunday morning applied the last Winter Fertilizer. I have been so pleased with your products for the lawn and for my flower beds and tomato plants. My lawn looks like green velvet. I have two dogs and am very careful as to what products I apply to my lawn and gardens. Thank you also for the "computer reminders" that you send out. They are very helpful.

Peggy S. – Laconia, NH

Thank you and your staff SO MUCH for getting us an order of ice melt today. You've made not only our customers, but staff (who is always eager to please), very happy! It's that kind of service and attention that will have us coming back to you!

Robbie Kaplan, Ace Hardware – Washington, DC

The best stuff! I use it all the time. I used it on 15 wint o'green arborvitaes, recommended by Paul Parent. They all are thriving and huge; 4 feet to 15 feet in three years.

Tammy Schwab

We [used your] ice melt today and it worked much better than what we were using before.

Thomas Beaver, General Growth Properties – Columbia, MD