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MONTHLY CARE GUIDES

April Lawn Care Guidelines

  • Control cedar-apple rust. When the orange jelly galls are visible on juniper (cedar), begin treating apple and crabapple trees with a fungicide. Treat hawthorns accordingly.

  • Mow or cut back old liriope and other ornamental grass foliage.

  • Fire blight bacterial disease can be controlled at this time.

  • Plant disease-resistant varieties to avoid diseases.

  • Diplodia tip blight fungicide applications at bud break.

  • Control of powdery mildew disease can be done with early detection and regular treatment. Many new plant cultivars are resistant.

  • Most bedding plants, summer flowering bulbs, and annual flower seeds can be planted after danger of frost.  This happens around mid-April in most of Oklahoma.

  • Let spring flowering bulb (daffodil, tulip, etc.) foliage remain as long as possible before removing it.

  • Fungicides for leaf spot diseases can be applied.

  • Warm-season grass lawns can be established beginning in late April from sprigs, plugs, or sod.

  • Warm-season grasses can be fertilized three to five times per season using one pound of actual nitrogen per 1,000 sq. ft. in each application. Apply one pound in April, May, June, August and September for a high quality lawn.Water in nitrate fertilizers.

  • Mowing of warm-season lawns can begin now. Cutting height for bermuda and zoysia should be 1 to 1 1/2 inches high. Mow buffalo at 3 inches high.

  • Damage from Spring Dead Spot Disease (SDS) becomes visible in bermudagrass. Perform practices that promote grass recovery. Do not spray fungicides at this time for SDS control.

  • Be alert for both insect pests and predators. Some pests can be hand picked without using a pesticide. Do not spray if predators such as lady beetles are present. Spray only when there are too few predators to be effective.

  • Remove any winter-damaged branches or plants that have not begun to grow by late April.

  • Clean out water garden and prepare for season. Divide and repot water garden plants.

  • Begin feeding fish when water temperatures are over 50 degrees F.

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