Zoysia care - Knowledgebase Question

Spencer, NC (Zone 7B)
Question by welsh8us42
March 26, 2005
My husband and I just bought an older home. The lawn hasn't been cared for in ten or more years. Lots of weeds (purple, onions etc.) and the lawn is predominately zoysia. How do I care for the lawn? Do I put down lime and fertilizer, weed-killer? I live in zone 7. Thanks!


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Answer from NGA
March 26, 2005

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Barbara,

Good lawn care can be summarized in three cultural practices: mowing, watering and fertilizing. If you will do these three properly, your lawn will be the best on the block!

Frequent mowing is better than infrequent mowing. Mow on a 5-7 day schedule, removing no more than 1/3 of the leaf blade with each mowing. For example, a St. Augustine turf should be mowed to 2 1/2" when it reaches 3", while a semi-dwarf bermuda or zoysia would be mowed to 1 1/2 or 2" when it reached 2 or 2 1/2".

While many homeowners like to water 15 minutes a day, your turf will benefit from a good soaking applied less often. Apply 1/2 to 1 inch of water once or twice a week. A coffee can makes a good rain gauge to test out how long it will need to be run to apply an inch. Frequent wetting promotes disease problems and a shallow rooted turf. Let the soil dry out a bit between waterings and the grass will develop a deep root system and do much better.

Fertilize with no more than 1/2 to 1 pound of nitrogen in spring after you have mowed the grass twice, and again in fall (around late October). Apply a product with a 3-1-2 ratio of nutrients as this is roughly the ratio of nutrients grass takes in. So, for example, if you purchased a 15-5-10 fertilizer (15% nitrogen), you would apply about 7 pounds per 1000 square feet (1 pound / .15 = about 7). If you purchased a 21-7-14 fertilizer (21 % nitrogen), you would apply about 5 pounds per 1000 square feet (1 pound / .21 = about 5).

Healthy turf will choke out most of its weed problems. When the turf is thin and soil is exposed to the sunlight, weeds will sprout and you have a battle on your hands. So first concentrate on the above 3 cultural practices and you will be amazed at the results.

Persistent weed problems like wild onion would require special weed control product applications. Your County Extension Office can assist by recommending an appropriate, labeled spray product.

Thanks for the question. Please stop in again soon!

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