Regional Gardening Reports :: National Gardening Association

Western Mountains and High Plains

June, 2008
Regional Report

Fertilize Summer Bulbs

As the growth expands on gladiolus, cannas, and dahlias, it's time to fertilize with a complete, slow-release fertilizer such as 10-10-10. Follow label directions and water in well. This will help them get off to a strong start early in the season.

Divide Bearded Iris

Once the bearded iris have finished blooming, it's time to divide and conquer. This is encouraged every three years to keep the bed fresh and vigorous. Discard the old and spent rhizomes, and transplant fresh, healthy, and vigorously growing rhizomes. Fertilize with a complete fertilizer.

Plant Warm-Season Vegetables

Now that the soil is staying warmer at night, continue to plant beans, squash, cucumbers, herbs, and transplants of tomatoes and peppers. These sun- and heat-loving vegetables will germinate and grow more readily now that warmer weather has arrived.

Deadhead Spring-Blooming Perennials

As the flowers fade on dianthus, basket of gold alyssum, candytuft, and other spring-blooming perennials, take some time to deadhead the faded blooms. This will not only tidy up the garden but will often encourage a second flush of bloom if the weather cooperates.

Take Remedial Action Against Turf Mites

If your lawn was infested by turf mites this past winter and early spring, it will take time for regrowth to fill in the thin spots. While there is moisture in the soil, core-aerate to remove 3- to 4-inch plugs, fertilize with slow-release organic nitrogen, and water deeply. If large areas are dead, replacement may be necessary.


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