Baltimore Sun Sunday

Don’t fall back on lawn care

- By Mike LaFollette

From mowing to seeding, fall maintenanc­e sets up your lawn to emerge healthy and hardy in the coming spring. However, many homeowners stop paying attention to their lawns once cool weather sets in. That’s a mistake. Not only does lateseason yard care play an important role in overall lawn health, it minimizes the amount of time you’ll spend on maintenanc­e once spring arrives.

Continue mowing as long as new growth appears. Cut the grass to a height of 3 inches; don’t assume mowing short will reduce time spent on lawn care.

That’s because in the fall, lawns focus more energy on root growth than blade growth. Scalping the turf stresses the roots, making it hard for lawns to resist weeds and pests, not to mention survive the winter.

As leaves drop, mulch them into the lawn along with grass clippings. Though many homeowners debate this practice, studies consistent­ly show that mulching leaves causes no negative effects to lawns, turf or soil pH.

Just don’t let the leaves pile up. Mow each weekend, and it shouldn’t be a problem. Several fertilizer applicatio­ns throughout fall should help your lawn recover from summer stress; improve color, root structure and density; and help it spring back after winter.

The No. 1 rule when applying fertilizer: Always follow the instructio­ns, including when and how much to use. Fertilizer misuse can harm the environmen­t and even destroy a lawn.

Also, buy fertilizer specifical­ly blended for lawns. Of the three main nutrients in fertilizer — nitrogen (N), phosphorou­s (P), potassium (K) — nitrogen is the most important for grass, so the first number in the ratio on the bag should be the largest.

Typically, you should apply 1 pound of nitrogen per 1,000 square feet of lawn. To calculate how many pounds of nitrogen to apply per thousand square feet of lawn: Take 100 and divide it by the first number in the fertilizer ratio.

So, if your lawn is 1,000 square feet and you have a bag of 25-0-5 fertilizer, you’d want to use 4 pounds of product per applicatio­n.

One last note about fertilizer: If you’re using granular fertilizer, use a broadcast spreader to ensure even applicatio­n. Too much fertilizer in one area will burn and potentiall­y kill the grass.

For large infestatio­ns, consider a broadleaf herbicide, which comes in selective and nonselecti­ve forms. Selective herbicides only attack specific plants (dandelions, clover, etc.); nonselecti­ve herbicides kill everything they touch. For weeds within the lawn, use a selective herbicide, otherwise you’ll kill the grass.

If you’d rather not use a herbicide, you can always dig out weeds by hand; just make sure you pull out the root system or they’ll return the following spring. This method isn’t always practical for large areas covered in weeds.

Yes. Some pros even recommend it. Cool temperatur­es and warm soil conditions make late summer to early fall an optimal time to sow grass seed. Just don’t wait too long, or the grass won’t establish by the time temperatur­es drop.

As for repairing dead patches, remove the grass down to the bare soil, use a rake to rough up the soil and then add seed.

Germinatio­n usually takes around 10 to 15 days. It’s important to keep the soil moist but not drenched during this period. After it starts to grow, you should continue to water on a daily basis to encourage root growth and to prevent it from drying out.

 ?? DARELL YOUNGQU PHOTO ?? Caring for your lawn properly in the fall leads to healthy grass in the spring with little effort.
DARELL YOUNGQU PHOTO Caring for your lawn properly in the fall leads to healthy grass in the spring with little effort.

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