Frequently Asked Questions

Can I use this with other plants in my garden, or just roses?

Yes!  You can use it on all flowers and vegetable plants.  It contains all natural products.

How do I apply it?

Remove immediate surrounding mulch from the plant and water the plant first. Sprinkle or lightly scratch a half to full cup of Mile-Hi Rose Feed (based on plant size) around the plant. Replace mulch and water again. Feed around the base of each rose bush 3 times per year. We recommend doing so April 15, June 15, and again August 15. Lesser amounts of Mile High Rose Feed for smaller plants.

How soon will I see results?

Typically, we begin to see results within 30 days as this is a slow release fertilizer. Our products are all natural and therefore it takes a little longer. Organic fertilizers usually contain many plant nutrients in low concentrations. Many of these nutrients have to be converted into inorganic forms by soil bacteria and fungi before plants can use them, so they typically are more slowly released, over time.

Do I need a soil test before I apply this?

A soil test is a great tool to measure a plant’s growing potential. Often, soil nutrients are either lacking or may be in abundance which affect plant health and growth. A soil test is recommended every few growing seasons to establish a baseline of nutrients and other characteristics including pH, soil texture and amount of organic matter. We recommend using the Colorado State University soil lab—normal turn-around time is two weeks. Instructions, pricing and more information can be found on their website. Click on horticultural applications for gardeners.

How is this different from chemical products?

Mile High Rose Feed uses a unique combination of 6 organic elements – Kelp Meal, Mile-Hi Alfalfa Meal, Meat and Bone Meal, Blood Meal, Fish Meal and Cottonseed Meal. The primary elements used are Nitrogen, Phosphorus, and Potash.  The secondary elements are Calcium, Magnesium and Sulfur. There are a few trace elements of iron, zinc, manganese, copper, boron, and molybdenum.

What time of year can I use it? Does it depend on my hardiness zone?

For Zone 5b (to find your zone check Plant Maps ), we recommend applying Mile High Rose Fertilizer on April 15, June 15, and August 1 to 15 each year.

Why is an organic fertilizer better than a chemical one?

Organic fertilizers such as manures, compost or bone meal are derived directly from plant or animal sources. Inorganic fertilizers such as ammonium sulfate or ammonium phosphate are often called commercial or synthetic fertilizers, because they go through some manufacturing process, although many of them come from naturally occurring mineral deposits. Since bacteria and fungi have to decompose organic fertilizer before they can be taken up by plants, nutrients are released more slowly, especially during cold weather when soil microbes are not as active. But organic fertilizers have many advantages. With organic fertilizers soil crusting is reduced. Organics may improve water movement into the soil and, in time, add structure to the soil. Organics feed beneficial microbes, thereby making the soil easier to work. Organic fertilizers may cost more than chemical, or inorganic fertilizers, because they are less concentrated, supplying fewer nutrients pound for pound.

How frequently should I apply MHRF?

For Zone 5b (to find your zone check Plant Maps ), we recommend applying Mile High Rose Fertilizer on April 15, June 15, and August 1 to 15 each year.

Do I have to use anything else in conjunction with MHRF?

In addition to our Rose Feed, we recommend using Mile High Kelp Meal 2 times per year on or around April 15 and July 15.

  • The late Dr. Warren Kirkley used to say that you can tell the health of the soil in your rose bed by turning over a shovel of soil and counting the number of worms you’ve unearthed. Worms love Mile-Hi.

    Carol Macon Master Consulting Rosarian, Colorado Springs
  • Is the perfect ratio of nutrients and minerals to help your roses thrive.

    A Colorado Rosarian
  • Along with Alfalfa Meal, MHRF adds important nutrients to our alkaline soil for the cultivation of strong, healthy roses. I’d also add a half cup to all your Clematis too. They seem to love it too.

    A Colorado Rosarian
  • Rosarians on the front range of the Rockies are fortunate indeed to have a dry fertilizer formulated expressly for native soils. The bottom line for the Macon Garden fertilizing regimen is Mile-Hi Rose Feed, which we have been using for as long as it has been available, with excellent results.

    Carol Macon Master Consulting Rosarian, Colorado Springs
  • My roses are much more productive when they are fed with this fertilizer.

    A Colorado Rosarian
  • I've recorded first hand, the improved growing, flowering, and survivability of my and other's roses when using Mile-Hi Rose Feed. The ingredients are supported by research as being highly beneficial to shrub type plants. The formulator of MHRF was an avid, active grower of roses and researched his recipe continuously in order to choose the most efficacious ingredients.

    A Colorado Rosarian
  • The use of organic Mile-Hi Rose Feed gives me bigger and more colorful rose blooms on healthier plants. What else is there to say? It works well on anything I grow. It’s a great fertilizer that you only have to apply three times a year. It builds soil structure, and promotes strong plants from the roots up.

    Dave Ingram Denver Rose Society
  • Their alfalfa and kelp meals make great soil amendments. To help new plants get established, I use the kelp meal mixed in planting backfill for its superior water holding ability. Then it breaks down to improve the soil and the plant roots. The alfalfa meal brews a great alfalfa tea.

    Dave Ingram Denver Rose Society

Get Our Fertilizer Guide

Our definitive guide on all things fertilizer will be ready in a few weeks. Be one of the first to get it.

Find Us in Stores

Mile-Hi is in gardening stores and specialty retailers across Colorado.

Stay in Touch

We’ll keep you updated with the latest from Mile-Hi.

Contact Us

We're not around right now. But you can send us an email and we'll get back to you, asap.

Not readable? Change text. captcha txt

Start typing and press Enter to search