Most landscape lawns, sports turfs, and golf course surfaces should have reached full green-up but there will be some exceptions. The major exception to this is zoysiagrass turf.

Zoysiagrass will not begin green-up until mid- to late-May. Although not as slow to green-up as zoysiagrass, fine fescue will be slower than perennial ryegrass and tall fescue. Many of the Kentucky bluegrass varieties that are commonly used for sod production will be slow to green-up in the spring.

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Brown Ring Patch (aka Waitea patch) is starting to show up on golf course putting greens at this time.

This disease is caused by the fungus Rhizoctonia circinata var circinata and typically develops during warm weather from April through June. Symptoms start as small yellow rings (0.25-2 inches wide) with green grass in the center and can ultimately reach a foot or more in diameter. The yellow rings can turn an orange or brown color as the disease progresses. [Read more…]

The leaf spot phase of this disease, caused by the fungus Drechslera poae, is apparent on susceptible Kentucky bluegrass turf at this time.

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Having touble controlling your Annual Bluegrass Weevil (ABW) populations? You’re not alone. Insecticide resistance in ABW is a growing and expanding problem. And because the major resistance mechanism involved, enhanced metabolic detoxification of the insecticide active ingredients, is not very specific, the resistance can be very broad. [Read more…]