Captain Bringdown sez it’s time to mulch

Posted on June 1st, 2007 – 10:38 AM
By Connie Nelson

For more Zone 4 gardening tips, check out Connie’s weekly podcast Dirt on Gardening

I know, I know, you already mulched. In fact, you probably added a nice, thick layer of wood chips, straw or dried grass clippings to your gardens weeks and weeks ago.

Summer mulch is one of the best things to happen to the garden since, well, winter mulch. A 2- to 3-inch layer of summer mulch holds in soil moisture, helps cut down on weeds and evens out fluctuations in soil temperatures, which helps plants grow better.

BUT you’re supposed to wait until the soil dries out — usually by early to mid-June — to mulch. Experts say if you mulch too early, you can end up with mildew and fungus, both very nasty.

This year, I was good. I waited. In part because that’s what the experts say, in part because I’ve been too darn busy to mulch. Did you wait? Or did you mulch early? What’s your mulch of choice? Got any good tips on free or next-to-free mulch?

18 Responses to "Captain Bringdown sez it’s time to mulch"

bsimon says:

June 1st, 2007 at 11:13 am

I mulched two weeks ago. I had to mulch though, as I had a ton of waste from tree-trimming and buckthorn eradication. Some of the much went on my attempt at a small native prairie wildflower garden, stocked with plants from the Friend School sale. Most was placed anywhere I could find space, which was either on the dog path along our fence to hold down mud, or in newly opened spaces formerly taken by buckthorn - the chips will hopefully keep the dirt on our hill until we plant there - which probably won’t be until next year.

Normally I get chips from the free piles placed by the city of Minneapolis in various parks’ parking lots. This time, I split the cost of a chipper with friends and we spent a saturday morning chipping branches at our houses (they’d taken a tree down).

I mulch with woodchips primarily because they’re free. My dad used to use mushroom mulch which worked great, but I haven’t yet bothered to find a local source (his sources back in the day were in WI & IL).

Connie Nelson says:

June 1st, 2007 at 11:28 am

wow. it’s totally cool that you made your own mulch. We did that one year when we took down a pine tree in the back yard. I wasn’t too hip about operating the chipper, tho. Reminded me too much of the movie Fargo.

I usually use the free mulch from the city, too. It works just fine and the price is right. I have to admit I don’t know what mushroom mulch is. Any details?

Accidental Gardener says:

June 1st, 2007 at 11:52 am

I have been mulching over the past few weeks. We live on sand and, in case you haven’t noticed, it hasn’t rained much so wet is not an issue. Getting mulch down while I still have space to walk and place the mulch is the priority. Once everything starts to fill in, which it did quickly with the warmth this year, I can’t mulch till fall.

Connie Nelson says:

June 1st, 2007 at 12:05 pm

Yeah, it does seem like it’s been kinda dry. I have lotsa sand in my yard, too. But in the past couple of years, my garden’s been dogged by powdery mildew and a fungus or two, so I try to wait a bit to mulch in hopes it’ll make a difference.

bsimon says:

June 1st, 2007 at 2:09 pm

Me three on sandy soil.

Mushroom mulch is, as I understand it, the leftover growing medium from growing mushrooms - basically a bunch of shredded organic matter. The piles were usually still hot when we were unloading them & spreading the stuff around the yard. It did a great job of keeping the weeds down, keeping the ground moist & it pretty much disappeared by spring. Which is why I’d like to find some in place of the wood chips!

msmith says:

June 1st, 2007 at 4:50 pm

As a first year gardener, here’s what I don’t get: I’m supposed to put on winter mulch (redwood bark, in my case), but then not supposed to put on summer mulch till June. Does that mean I’m supposed to shovel up all that bark in March? That seems like quite a chore…

Peter Hoh says:

June 1st, 2007 at 10:27 pm

I’m not too happy with the wood chip mulch available at Ramsey County Yard Waste sites. It’s a little too rough, with lots of big chunks.

I use cedar mulch for some of my paths. I prefer a smaller, darker mulch for my flower beds. I’ve used cocoa bean mulch for several years. Aside from the occassional problem with slime mold, I like it. Pine bark nuggets (the small ones) are pretty nice, too.

Last year, for a big project at my sister-in-law’s house, I used something called Organic Grower’s Mulch from Kern Landscape Resources in St. Paul. It’s small bits of wood mixed with composted manure. I took some home and used it in a few places. I really like it. I don’t have to brush it aside before putting in a new plant — I just mix it into the soil. Applied thickly, it does a good job of suppressing weeds.

laura says:

June 2nd, 2007 at 8:58 am

i’ve never mulched my vegetable garden, but am interested in trying. is wood chip mulch better than grass clippings? does it end up working its way down into the soil? do you rake it up in fall?

Jaime Chismar says:

June 2nd, 2007 at 11:42 am

This year, for the first time, I plan to mulch my veggie garden. The past two years, I grew veggies in haphazard clusters and it was rather difficult to mulch. This season, I decided to plant in rows and suddenly the necessity of mulching made perfect sense.

>>> do you rake it up in fall?
There are many ways you can put your garden to bed. Some gardeners yank everything up in the fall, add a few supplements to the garden, then re-mulch to protect the soil from erosion during the winter. Other gardeners leave their mulch as is all growing season long, then rake up in the spring.

pat says:

June 3rd, 2007 at 6:53 am

can i use pine needles that i rake up for mulch? also do perennials still spread when they are mulched?

Jaime Chismar says:

June 3rd, 2007 at 10:47 am

Pine needle mulch is all the rave in other growing zones. When it is green, it is slightly acidic, but really not worth worrying about.

>>do perennials still spread when they are mulched?
Could you be more specific? Are we talking hostas or yarrow or ???

debw says:

June 4th, 2007 at 7:13 am

What you mulch with is a personal choice involving what you are growing and how attractive the mulch is. I mulch around my perennials where they get passerby with the newspapers covered with the free city wood chippings. Whether a perennial spreads with the mulch has to do with whether it spreads by roots (like hosta), by stem rooting ( spirea comes to mind here), or by sending out seeds that make their way to the ground (coneflower). The ones that send out seeds are not as sucessful with mulch but do get the young’uns to spread as the mulch breaks down. I do not scrape off mulch on the perennnials, just apply more as it breaks down.
I think where Connie was talking about not mulching until it gets warm is the vegetable beds. The soil needs to warm up so seeds and plants get a good start. I mulch with shredded newspaper around the veggies, there is a new installment of mulch on the doorstep each morning, it breaks down in the course of winter and all the cellulose can’t harm my clay soil. I wait until the seed plants are up and around so I can find them and mulch as the bin gets full. I also find that I get less soil splashing up on the fungus prone things like tomatoes and beans.

Connie Nelson says:

June 4th, 2007 at 10:16 am

Hey Msmith,
There’s a difference between summer mulch and winter mulch, tho they both help prevent soil temperatures from fluctuating.

Most people don’t use wood chips for winter mulch, because the best winter mulches hold air in. Straw or leaves (best if chipped up) are the most popular winter mulches. Winter mulch is much thicker than summer mulch, too. In winter, most beds and plants should have 6 to 10 inches of mulch. And, yes, you should remove winter mulch in spring.

All this said, not everyone winter mulches all their plants. I usually only mulch the beds that have tender or unprotected plants. But it really helps plants make it through winter, especially the kind of winters we’ve been having lately, where we can’t count on an insulating layer of snow.

Who out there winter mulches? Do you mulch every year? Have you seen a difference?

Connie Nelson says:

June 4th, 2007 at 10:18 am

Hey Laura,
Most folks don’t use wood chips as mulch in veggie gardens, in part because it takes so long to break down. Most gardeners I know prefer straw or dried grass clippings or some other organic material that breaks down more quickly when worked into the soil.

Connie Nelson says:

June 4th, 2007 at 10:32 am

Pat,
Pine needles make great summer mulch. In fact, they sale them by the bag in the southern states. They do add a bit of acidity to the soil, but not enough to affect most plants.
And, yes, perennials still spread with there’s mulch on the ground.

Chris says:

June 5th, 2007 at 2:39 pm

I dunno, does Leo DiCaprio mulch?

Seriously, last year I mulched my veggies after they were about 8″-12″ tall and they seemed to like that very much. I did winter mulch my hydrangeas and perennials, since they were young. For the trees and shrubs, I pulled away the bark mulch, added a mix of compost, top soil and shrub feed and then re-mulched using cedar bark. This year, I pulled the winter mulch off (leaves and a fine-grind of cypress) and remulched with more cedar bark. I just mulched the tomatoes and peppers and am looking askance at the brussel sprouts.

It worked out well last year, though I did lose a couple of perennials. Ah well.

Connie Nelson says:

June 6th, 2007 at 1:15 pm

Chris,
Sounds like you are a mulch maniac. Good for you! I really think winter mulch makes a big difference in what survives, especially now that are winters are so wacky. I, too, lost a few things this winter, including a brunnera I just loved. Oh, well, I guess it serves me right for not mulching that bed.

BTW: don’t think Leo DiCaprio mulches. His people mulch for him!

Sandy Davis says:

November 10th, 2007 at 1:49 pm

I applied redwood compost and cocoa chip mulch in my Sacramento garden and around walkway paths this summer and now that fall is here I am experiencing mold and mildew on the mulch. What can I do to prevent this from happening and how to I stop the neighborhood cats from using it as a “kitty box”? It’s hard to find the kitty poo in all the bark, except for the smell and flies. I regret having used these mulch products, but I have invested soooo much money in it now, I want to try to find a way to make it work. Please help!