Pros and Cons of Mulches for Summer Landscaping Projects - McDonough Landscaping | Woodbury and Cottage Grove Landscape Company (2024)

Pros and Cons of Mulches for Summer Landscaping Projects - McDonough Landscaping | Woodbury and Cottage Grove Landscape Company (1)

Pros and Cons of Mulches for Summer Landscaping Projects - McDonough Landscaping | Woodbury and Cottage Grove Landscape Company (2)Which Mulch Is Right for You?

Mulch is the secret weapon of gardening ninjas. After completing a new landscaping project or clearing weeds out of a garden, laying mulch over the soil has buckets of benefits: it suppresses weeds, diminishes evaporation, and delivers a tidy, cohesive look to the landscape. Many mulches also improve soil structure and fertility.

You’ve got so many mulches to choose from. Here’s our breakdown of the pros and cons of a variety of mulches. Consider your site and your garden’s needs, and then spread some mulch love!

FALLEN LEAVES

  • PROS: Free! Shred them with a power mower or a weed eater, or let them dry to a crumbly state. Alternatively, pile them and let them decompose for a year or so before use.
  • CONS: If they’re damp and not shredded, they’ll mat and rot. If they’re really light and dry, they’re prone to blowing away. Some leaves (for example black walnut) deliver toxins and have adverse effects on some plants.

GRASS CLIPPINGS

  • PROS: Free! Adds nitrogen to the soil.
  • CONS: Must be dried before application to prevent matting and rot. Break down quickly. Don’t use clippings from a chemically treated lawn, especially on vegetables.

PINE NEEDLES

  • PROS: Free! Good weed suppression; stay in place well; good on slopes; slow to break down; increase acidity, which benefits some plants (blueberries, rhododendrons, azaleas, and some types of conifers).
  • CONS: Prickly to work with; soil acidification

STRAW

  • PROS: Attractive color, good coverage, lasts longer than leaves or grass clippings.
  • CONS: Prone to weed seeds, which can cause more problems than it solves.

COMPOST

  • PROS: Dark color sets plants off beautifully; enriches soil quickly; inexpensive, especially if you make your own.
  • CONS: Breaks down quickly; very short-term weed suppressant.

SHREDDED BARK

  • PROS: Inexpensive; widely available; breaks down relatively slowly; stays put on slopes; sometimes a sustainable use of wood industry byproducts.
  • CONS: Can deplete nitrogen content from soil as it decomposes.

WOOD CHIPS

  • PROS: Often free from local arborists or utility companies.
  • CONS: May be acidic; may contain species toxic to plants (such as black walnut) or toxic to humans (such as poison ivy). Fresh chips can deplete nitrogen.

PINE BARK NUGGETS

  • PROS: Long-lasting (bigger nuggets last longer); good weed suppression; attractive.
  • CONS: Prone to tumbling down slopes or washing away in heavy rain.

COCOA HULLS

  • PROS: Smell like chocolate! Fine texture, attractive color. Not prone to fading.
  • CONS: Easily blown by wind; toxic to pets; may develop mold in hot humid climates. Expensive.

ROCK AND GRAVEL

  • PROS: Long lasting, don’t break down.
  • CONS: Long lasting. Don’t improve soil; hard to remove or plant in.

Posted in Blog.

Pros and Cons of Mulches for Summer Landscaping Projects - McDonough Landscaping | Woodbury and Cottage Grove Landscape Company (2024)

FAQs

What is a major downside to mulching? ›

Excessive mulch that is a layer more than 3 inches deep can suffocate and bury plants. In this case, oxygen and water are unable to reach the roots. A layer of 2 to 3 inches of mulch is enough. Do not over mulch.

What are the pros and cons of mulch landscaping? ›

PROS: Attractive color, good coverage, lasts longer than leaves or grass clippings. CONS: Prone to weed seeds, which can cause more problems than it solves.

Is mulching bad in summer? ›

Spring/Summer mulching is normally after the soil begins to warm in the spring. The primary roles of summer mulches are to warm the soil, reduce weed growth, and retain soil moisture. Spring/Summer mulching still provides all of the benefits of mulch listed above.

When should you not mulch? ›

While mulching in early fall is safe, you should never mulch during late fall. "This can insulate the ground and prevent plant dormancy," says Morrell. The much-needed hibernation helps plants survive the cold winter months.

What are the side effects of mulch? ›

to plants: Toxic to leaf tissue as shown by greatly decreased metabolic rates and waterlogged appearance. Root tissue is even more sensitive, showing toxicity when briefly exposed to 10 % methanol solution. to humans: Exposure can lead to symptoms of weakness, dizziness, headache, nausea, vomiting and blurred vision.

Does landscape mulch attract bugs? ›

Mulch can attract millipedes, centipedes, spiders, sowbugs, earwigs, ants, and even co*ckroaches crawling around in mulch beds. Many insects seek out the conditions that mulch naturally provides. These pests can be beneficial for breaking down organic mulch and can even feed on garden pests.

What are bad types of mulch? ›

Finally, avoid large, bark type mulch or big wood chips. Since these big pieces take a long time to decompose, and they end up depriving the soil and plants of nutrients.

How long does landscape mulch last? ›

Mulch should be replenished or replaced as you start to see signs of decomposition, soil erosion and discoloration. And you'll mostly likely need to remove and replace all mulch after 5-6 years.

Is it OK to mulch in July? ›

You can do late summer mulching. The longer answer is that late summer mulching may provide you with mixed results. The good news is that the worst-case scenario is that the mulching simply won't help. The best case scenario is the mulch will still improve moisture retention and limit weed growth.

What is the best mulch for hot weather? ›

A superior mulch product is pine straw. Pine straw has a beautiful finished appearance in a bed. It is easy to put down, comfortable to walk on, and smells wonderful on a summer day.

What is the best mulch for summer? ›

In hot climates, plants benefit from a loose, relatively dry mulch such as shredded leaves. These materials trap air and help insulate roots from extreme heat. If you live where summers are cool and rainy, compost and leaf mold are good options.

What plants don't like mulch? ›

There are some species that tolerate excessive mulch better than others. Some of the worst effected plants are grassy plants (iris, daylilies, liriope, etc.), Indian Hawthorn, Azaleas and Loropetalum.

Does mulch attract termites? ›

While the material itself does not draw termites to the area, mulch spread over three inches deep creates an inviting habitat for the pests. Layers of organic matter trap heat and moisture next to the ground. Termites use this thick mulch as shelter from harsh weather.

What mulch materials to avoid? ›

Among the worst offenders for tree mulch are rocks and gravel. Instead of conserving moisture, they heat up the soil, making tree roots thirsty and stressed. Their weight slowly compacts soil over time, and they provide no soil health benefits.

Is it better to mulch or not to mulch? ›

Mulching conserves water by retaining moisture for prolonged periods of time and giving your plants the protection they need in the heat of the day. During the fall months, it's recommended that you make sure there's a healthy application of mulch to ensure your plants don't get too cold.

Is mulch good or bad for the garden? ›

Mulch reduces soil water losses, suppresses weeds, and protects against temperature extremes, especially in places where it snows. Mulch also feeds soil biology as it decomposes, helping to create healthy, living soil. Healthy soil means healthy plants!

Is mulching good or bad for plants? ›

Mulch can mitigate soil compaction, and it is better than bare soil at capturing water and fostering water penetration, so it reduces runoff. It also slows water evaporation from the underlying soil by up to 35 percent, Dr. Fonteno said, and it moderates soil temperatures in the summer and winter.

Should old mulch be removed? ›

The question is, should you remove the old mulch or simply add to it? Old mulch refers to a mulch that is still intact after a year has passed since it was applied. Remaining mulch from last year must not be removed.

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