June Garden Checklist

Here’s what you should be doing in the garden come June according to Prairie Gardens Plant Experts.


It’s still the perfect time to plant any warm-season annuals, vegetables (check the maturity dates) and herbs. As well as any shrubs and trees, as long as the ground is workable and not too wet.

Planting when the ground is wet can cause permanent damage to the soil. Grab a clump of soil in your hand and squeeze. If it sticks together, it’s too wet to plant. If it crumbles, it’s dry enough to plant.

— MaryAnn M, Prairie Gardens Plant Expert


  • Annuals & Veggies: Fertilize your annuals & veggies with a slow release or liquid fertilizer according to solution instructions. Typically every few weeks on liquid fertilizers, and longer for slow release fertilizers. 
  • Herbs: Most herbs do not need to be fertilized.
  • Shrubs & Trees: Make sure to do it this month if you have not already.
  • Containers: Watering containers removes soil nutrients, so make sure to fertilize your containers and hanging baskets, too!

Spring Blooming Bulbs

Cut back the foliage of spring bulbs once the foliage yellows.


If you haven’t already prune spring flowering shrubs, such as lilacs, azaleas, redbuds and more after their spring bloom cycle.  You won’t want to prune before they flower in the spring, which will remove the blooms.


Pull weeds the old-fashioned way (by hand) when they’re young and less established to keep them from getting established and spreading. Weed-B-Gone can also be applied when weeds are actively growing.

It’s easier to weed when the weeds are young and less rooted in. Also, weeding on a rainy day is easier, they’ll pop up much more easily.

— John W., Prairie Gardens Plant Expert


Remove spent blooms or deadhead annuals, such as petunias and geraniums, so they can focus their energy on new beautiful blooms.


Our experts recommend keeping you lawn at about 3″ or at least 2″. Longer blades help retain soil moisture, which is especially important as we start to enter in the warmer months.


Continue to water consistently and often. On hot, humid days you may need to water more than once, and best practice is to water in the morning.

Insect & Disease Control

Watch for insects and visit our solution wall for remedies. Our Plant Experts are always near by to help!


As the weather warms, refresh mulching, especially around trees, to help retain moisture.

Grass Seed

You can still apply grass seed to bare areas. Just watch out for hot, humid dry spells.