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ljsemar

soil for roses

8 years ago

So I just purchased some soil for my new raised bed. When it came the soil was gray in color...I assumed it was just super dry and wheelbarrowed it from the right side of my driveway to the back left corner of my very large yard..it must have been at least 30 trips. I got it all in the bed, planted my roses, watered them and though it got much darker the dirt still had a grayish tone to it. It also seemed it took more time for the soil to absorb the water.

I called the company that I got it from and the lady says it's normal for it to appear gray and that it looks that way due to the fact that it's a mixture of 50 % compost and then has pecan shell mulch, pond sand, fish emulsion and granite to make up the other 50. She said that they add those things to help the soil retain moisture in our drought like area and also to provide nutrients to the plants. She said it's great soil for roses. However, it is my understanding that roses don't like to stay wet. Does this sound like a bad soil environment for my roses? If so, what can I do to help the situation that doesn't include emptying the bed?

Comments (5)

  • 8 years ago

    Roses, like most plants, prefer to grow in an evenly moist soil but not a wet soil. Plants cannot uptake soil nutrients in the absence of moisture so allowing a soil to dry completely can be detrimental to the plant.

    That soil is too heavy with organic material at 50 percent. Optimal for most plants is about 6 to 8 percent. However, if you mix that with the soil you already had it may be okay.

    Are these raised beds?

    What is your native soil? Clay, Sand? Loam?

    Why did you think you needed to replace that native soil?

  • 8 years ago

    Roses like water. If the bed is staying too wet, just stop watering it. I keep potted roses on a schedule where I refill the baby pool about twice a week. The roses sit in water for a day or two, then are out of water for a day, then get more water. They absolutely love it. Would they like it as much if I watered them every day? Not if I left them in the baby pool. But I have no intention of watering them every day.

    You seem overly concerned about the color. Get yourself some sunglasses, and look at the bed through colored lenses. That should fix that problem.

  • 8 years ago

    The highest priority among gardeners in our area is simultaneous moisture retention and good drainage, a quality our native soils do not offer. Based on the ingredients you list, I'd say you purchased a fine medium for roses (by "granite" do you mean decomposed granite or granite sand?). 6 to 8 percent organic matter may be the optimum range in cooler climates. When growing roses in Central Texas, 50% is not at all excessive. By the end of our long growing season, much if not all of that organic matter will be expended, which means you have a critical, never-ending task ahead of you if you want your roses to flourish: replenishing the organic matter on a regular basis. The traditional guideline for roses is 8 inches well-rotted cow manure [source: Texas Rose Rustlers].

    Do you mind if I ask from whom you bought this soil? Garden-Ville, Geo Growers? Other?

  • 8 years ago
    last modified: 8 years ago

    I bought it from a place in Buda, Tx called Advanced Organic Materials. It is a raised bed...in my yard it's basically solid rock under the surface. Most holes take me at least a half an hour, working with a spud bar to bust up the rock. So I was very excited to have a raised bed. The few places where it's not rock it's kind of clay like. Thanks for the responses, I just don't want my roses to die.

  • 8 years ago

    No worries. Based on your description, it sounds like your raised bed resembles a wading pool because the organic matter is not thoroughly wetted. If you turn on the garden hose at full blast, the water cannot percolate into the soil because the dry organic matter forms a barrier through which the water cannot pass. Visualize the wetting process as using an eye dropper to saturate a sponge. Add a trickle at the lowest possible flow rate until the water starts to accumulate near the surface. Turn off the hose. Let the organic matter absorb the water. Repeat until the water no longer stands. At 50% organic matter, the process may take a while.