Posts tagged ‘grass’

Even if the snow melts, dont rake! (at least not yet) from StarTribune.com


 

Metal bow rake

By deb brown • Special to the Star Tribune

Raking won’t make the snow melt. It won’t thaw the ground. Or give the temperatures a boost. What will it do? “More harm than good,” said Brian Horgan, a turf grass expert and associate professor at the University of Minnesota. While we may have come out of hibernation, our grass has not. “It’s still fragile,” said Horgan. “It can’t withstand wear and tear — and that means raking.” He expects the grass to be rake-ready by the first of May. “It kind of pops up,” he said. “You’ll be able to see it.” What can you do until then? “Go to a park,” he advised.

 I may be stating the obvious, but it’s too early to get your yard and garden ready for the growing season. Although the timing of spring chores can’t be dictated by the calendar, jumping the gun can be a waste of effort, and sometimes a waste of money. Here are some guidelines for what to do, and when:

Lawn care

Try to stay off the grass as much as possible while the soil is still moist and spongy underfoot. Because we had so much snow late this winter, we might have quite a bit of snow mold. If you see matted areas in the lawn, use a lightweight leaf rake to break them up. Usually, letting air and sunshine penetrate is all that’s necessary for grass to recover from snow mold.

If you fertilized the lawn last September, you probably won’t need to fertilize again this spring. However, if you do plan to fertilize the lawn, wait until it’s growing actively enough that you’ve had to mow it a couple times. Only then will grass plants be able to make best use of the nutrients.

If you’ve had a lot of trouble with crabgrass or other annual weeds in your lawn, you can use a product combining fertilizer with a pre-emergence herbicide in the affected areas. If you’d like to try a greener product, use one containing corn gluten meal. It prevents many annual seeds from sprouting and provides a natural source of nitrogen. It does take several years of applications to be most effective.

Pre-emergence herbicides should be applied and watered lightly into the lawn two weeks before crabgrass is expected to sprout. Typically, that means waiting until the last week of April or the first week of May. Because their effectiveness wanes over time, there is no reason to apply crabgrass preventers early. Don’t use these products if you plan to seed, unless you find one designed specifically for use with newly planted grass seed.

Gradually remove mulch

If you mulched your spring bulbs and other perennials, gradually remove the mulch as it thaws. You may choose to leave the mulch between plants, where it will keep the soil moist and help prevent annual weeds from sprouting.

Tender, hybrid tea roses are usually uncovered or lifted around mid-April most years. This year, however, you might want to wait. The canes of hyrbrid tea roses may be damaged or killed if nighttime temperatures drop into the teens.

Unwrap trees

If you used paper or plastic tree wrap to protect young trees from sunscald or animal damage, remove it immediately. The wrap holds moisture against the trunk, which can promote diseases.

If you’re concerned about rabbits and other critters gnawing on the thin bark, create a more permanent barrier. Make a cylinder of hardware cloth or chicken wire and place it around the base of your tree. Be sure to leave an inch or two of space between the cylinder and the trunk. Be sure to remove the cylinder if it begins to constrict the trunk’s growth.

Stay out of the garden

Wait until soil dries sufficiently before working in the garden. You can test for dryness by lifting some soil with a shovel, then making a small ball in your fist. If the soil is dry enough, the ball will be crumbly. If it stays together tightly, it is still too moist. Wait a few days and try again.

Prune with caution

Hold off pruning forsythia, lilacs and other shrubs that bloom in spring or early summer. If you prune now, you’ll sacrifice this year’s flowers.

A few shrubs bloom on new stems that are produced this spring, such as old-fashioned snowball hydrangeas and pink-flowering spireas, for instance. Those may be pruned in spring as they begin to grow, and they’ll still flower this summer.

Wait to prune evergreen shrubbery such as junipers, yews and arborvitae, until you see new growth. Then, you can cut them back as long as you don’t remove all the new growth. These plants will keep growing all summer; you can prune them again in early to mid-July if you want to limit their size. Wait, too, to shorten the new growth of spruce and pines.

Hire an arborist if your shade trees need pruning. It’s not a job homeowners should tackle. To avoid oak wilt disease, oaks can’t be pruned in April, May or June. And though it’s not harmful, some trees — notably maples — will drip lots of sap when they’re pruned in spring.

Keep strawberries covered

Strawberries can be killed when night temperatures fall to the mid-teens, so don’t be too eager to uncover them. When you do, keep the mulching material close by, so you can rake it over the plants if we get a cold spell.

Deb Brown is a garden writer and former extension horticulturist with the University of Minnesota

Even if the snow melts, dont rake! | StarTribune.com.

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Fall lawn care practices may be different this year : Extension news : University of Minnesota Extension


Here is an article from the University of Minnesota Extension about our drought conditions in Minnesota and what to do about your lawn and garden this fall.

Fall lawn care practices may be different this year

Media Contact: Catherine Dehdashti, University of Minnesota Extension, office 612-625-0237, cell 651-329-2427,ced@umn.edu

ST. PAUL, Minn. (9/18/2012) —Fall is the preferred time for many important lawn care practices. From fertilization and weed control, to aeration and seeding, there is no better time for cool-season turfgrass maintenance in the Midwest. But this year is different, according to University of Minnesota Extension turfgrass educator Sam Bauer.

“The lack of precipitation in August has caused many of our Kentucky bluegrass, perennial ryegrass, or fine fescue lawns to turn brown and cease growing,” said Bauer. “In order for your lawn to recover, you will need to begin irrigating regularly.” This means more than just one or two cycles, but enough water to wet the root zone sufficiently to sustain turfgrass health.

If your lawn is stressed from lack of moisture, typical fall maintenance practices that have been recommended in the past may add additional stress. “Concentrate more this fall on creating the best possible growing environment for your turfgrass, and you will reap the benefits during next year’s growing season,” said Bauer.

Here are some tips from Bauer for drought-stressed lawns:

  • Aerate after the lawn’s health has been restored. While aeration is a great fall practice, it further stresses drought-stressed turf and may actually cause the lawn quality to decline.
  • Don’t dethatch or use a vertical mower. This process tears turfgrass leaves and crowns, and should only be conducted when the lawn is healthy.
  • Don’t spray herbicides on a brown lawn. Systemic and contact herbicides used for weed control are more effective when weeds are actively growing.
  • Choose fertilizer sources with at least half of the nitrogen component present in the slow release form. High rates of quick release nitrogen fertilizers can have negative effects on drought-stressed turf. There is also a greater potential for environmental loss of nitrogen when the lawn is not actively growing.
  • Raise the mowing height and mow less frequently to encourage turfgrass recovery.
  • Maintain soil moisture to promote turfgrass recovery.
  • Spot seed and fertilize thin, weak areas with a high-quality turfgrass seed mixture.
  • Perform a soil test to determine fertilizer requirements of phosphorus and potassium.

For more information on lawn care, visit www.extension.umn.edu/turfgrass

Fall lawn care practices may be different this year : Extension news : University of Minnesota Extension.

Mold Growth on your lawn


Snow Mold

I woke up the other morning a thought that my lawn was covered in frost. When I arrived home from work that afternoon the lawn was still covered in white. The temperature was 58 degrees at the time and I thought something’s wrong. Upon closer inspection I realized that it was a grey/white mold that was covering my lawn. This mold is commonly called “snow mold”. It forms in weather conditions like what we’ve had this last year in Minnesota; wet cold weather for long periods of time. After a very wet fall, followed by a typical snowy winter and a rainy spring the conditions were ripe for snow mold. It can appear in two forms. Gray snow mold causes irregular dead , bleached patches in your lawn. The grey mold is clearly visible on your grass like the picture above. The other form is pink snow mold which produces circular, light brown patches that are sometimes blotched with pink fungus like the picture below.

Pink Snow Mold

Bonide Infuse

If left without treatment both forms can cause the grass in the affected area to die. Treatment involves lightly raking the area and then using a fungicide. Raking removes the mold and allows the grass to breath. Be careful not to pull out your grass with the mold. Your lawn is at a fragile stage right now and heavy raking will do some real damage. Fungicide kills the mold and helps prevent the mold from returning.  Bonide brands “Infuse” is a good choice of fungicide treatment.

You can also help prevent this  from happening by taking some measures in the fall. Do not use a fertilizer that is high in nitrogen in the late fall. Also you can aerate your lawn to improve drainage. DO NOT aerate your lawn right now. Aerating your lawn too early will do more damage than if you left the mold and did nothing else. Aerating too early tears up your grass and rips out the root base of the lawn. You need to wait until your lawn dries out before doing any aeration. See my Spring Lawn Care blog for more info on lawn aeration.

For more information  call 763-553-1222or visit us at 12700 Bass Lake Road Maple Grove, Mn 55369Check us out on the web at levahnbros.comCheck us out on Facebook and “like” us

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