Nutrients That Roses Need
What roses need to grow, as we would like
them to...
author Peggy-Anne Pineau
  All the sun you can muster up (minimum of 6 hours per day), with plenty of water that will
drain off readily along with a good source of -Nitrogen, Phosphorous, & Potassium - either
natural sources or man-made sources. These are the building blocks to successfully growing
roses!

In today’s fast pace of life the most common way to fertilize roses is with what we call synthetic
or man made ready fertilizers. These come in water soluble (Miracle Grow) that work
immediately when mixed with water or granulated fertilizers in bags/boxes (10-10-10) that take
time to dissolve in the soil; especially if it has been coated with a polymer to release nutrients
slowly over the growing season (SRF). This means of fertilization works well and certainly give
the roses what they need in the line of nutrients to grow if the instructions on the package are
followed. What we’d like to stress is that this means of fertilization with no other means does
nothing to build up and keep your soil fertile & healthy and regular fertilizing is needed
because of this. If you don’t fertilize regularly, then your roses do not get fertilized and
therefore don’t get what they need to flourish!

Plants contain all 92 natural elements, but require only sixteen for growth. Thirteen of these
elements are mineral elements or nutrients. There are six macronutrients and seven
micronutrients. It is important to stress that most gardeners need only concern themselves
with supplying quality pre-packaged fertilizers according to manufacturers instructions. This
stated, gardeners should familiarize themselves with the three major nutrients identified on
most fertilizer packaging...

These are the nutrients that you will see commonly identified on the fertilizer package.
Nitrogen, Phosphorous, and Potassium are labeled as a sequence of three numbers (10-10-
10) or (20-20-20).

  • Nitrogen promotes healthy vegetative, green growth.
  • Phosphorous is vital to promote strong root growth and flower production.
  • Potassium makes sure all is in good working order somewhat like a vitamin. I call it the
    plants immune system booster as it helps the plant through stressful times such as
    disease/insect damage, drought and cold temperatures.                               



Balanced fertilizers have an equal representation of the three major nutrients, for example, 10-
10-10. Fertilizers formulated for strong green growth will have a larger percentage of nitrogen.
Fertilizers for evergreen trees or turf grasses will have a large percentage of nitrogen, for
example, 30-10-10. Fertilizers developed for flower production normally has a high
phosphorous content, for example, 10-20-10.In general, stay away from high nitrogen content
fertilizers for use with roses.

How you fertilize your roses depends on what stage of the growing process your roses are at.
If you are fertilizing newly planted roses you should only use bone meal or super phosphate
(very small amount) in the planting hole at the time of planting. You certainly do not want to
promote a lot of green growth at the expense of a good root system.

Your basic rose feeding program should start out with a balanced fertilizer (10-10-10), or one
with a high phosphorous content (5-10-5, 10-20-10). Even better are rose fertilizers, which
include the other macro and micronutrients.

The secondary macronutrients are sulphur, calcium, and magnesium. Use of a high quality
rose fertilizer will ensure that these macronutrients are made available to the roses.

Of these secondary macronutrients, magnesium is of substantial interest to the rose
gardener. Magnesium sulfate, provided in the form of Epsom salts, is a time-honored secret
for intensifying flower color, increasing flower production, and flushing harmful salts through
the soil.  Northern gardeners need not add Epsom Salts as our soil is already acidic enough.

If you have sweet or akaline soil you can add Epsom salts at the rate of 1/2 cup per plant

Successful rose growing is really no big secret. It boils down to the basic fact that, if you give
the rose what it needs, it will flourish - don’t give it what it needs, or only part of its needs, then
it won’t. So, the key to success is to know what your roses need and give it to them!

Remember.. A hardy rose is only hardy if it is healthy

Growing good roses is built upon the foundation of excellent soil preparation. This means
putting plenty of organic materials to hold moisture in sandy type soils, add micronutrients as
they decompose and improve the soil tilth in general. Here enters COMPOST. The beauty of
compost is that it is the finest amendment you can add to your garden soil, and it is also the
least expensive (with the exception of your time!).
Now lets talk COMPOST!!



Compost adds lots of micro-nutrients and organisms that are crucial for healthy soil and good plant growth.
  • Improves soil structure/drainage (clay soils drain better & sandy soils hold moisture better
  • Provides a wonderful home for earthworms and other beneficial organisms
  • Provides a wonderful home for earthworms and other beneficial organisms

Composting is a natural biological process, carried out under controlled conditions, which converts organic
material into a stable humus-like product called compost. During the composting process, various
microorganisms, including bacteria and fungi, break down organic material into simpler substances. Composting
is an aerobic process, meaning that the microorganisms require oxygen to do their work.

Locate the compost pile in a semi-shaded area, which is out of the way somewhere. Add layers of various
organic materials (see ingredients below) until a six inch layer is created; then add with another four to six inch
layer of soil, manure, or finished compost. Continue alternating layers until a 3-foot high pile is created.

The composting process can take from 1 month to 1 1/2 years depending on how much work you’re willing to
put into it.

To speed the process, turn the pile frequently, use lots of layers, and use as finest ground material as you can
manage.

Compost is ready to be used when it is dark in color, crumbly and has an earthy” smell. Sift the compost to
eliminate material that has not yet finished composting, and return the unfinished material back to the compost
bin or pile.
                                                    Things to make compost with...

    -Lawn clippings (source of nitrogen)

    -Chopped leaves (finely chopped only large leaves take a long time to break down, shredded branches,
    weeds (carbon source)

    -Garden plants that have been hauled out or pruned or cut back.

    -Kitchen waste all vegetative material (peelings, leaves, apple cores, etc.)

    -Crushed eggshells, - Shredded newspaper- though not in large amounts. Remember- keeps the amount
    of brown materials (dead or carbon source: i.e. paper) in equal amounts with the green (living, nitrogen
    source: i.e. veggie peelings)

Things not to put in your
compost..
.

Diseased or insect infected
plant leaves & roots.

Most people, no matter how
well intentioned they are, do
not tend the compost as
they should therefore the
heat does not build up to
the temperatures needed to
kill any bad insects and
their eggs or diseases that
are on plant material -
therefore-
unless you know you’re
going to put the right
amounts of carbon
(brown
material)
and nitrogen
(
green material), water and
turn your compost pile on a
regular basis - don’t put the
above things into it!!

Do’ and Don’ts of composting...

The composting process works fastest when materials are in small pieces. Dense,
hard things such as woody materials, turnips, thick roots etc should be made
smaller or crushed before adding to the pile.

Don't add any materials in too thick of layers of any one kind. Grass clippings
should be no more than 3 inches deep, leaves up to 6 inches deep (cut or chop or
dry and crumble them).

The composter contents should be kept constantly moist (but not wet). If the
contents are too dry, the whole process will take many months. If the contents are
too wet, beneficial organisms vital to the process will drown and suffocate with no
oxygen.

Turn or mix the compost every couple of weeks or each time new material is added
will keep the compost pile aerated. Oxygen is crucial to the whole process. It must
be available throughout all of the composting material for microorganisms to live
and do their work.

Composting may be done in the winter. Continue adding materials throughout the
winter months. Turn the compost heap thoroughly in the spring to reactivate.

Nitrogen is needed for successful composting. That means anything GREEN. Add
grass clippings, table- scraps and or small amounts of organic fertilizer from the
garden center.

Use a compost bin with a container to prevent animals from rooting around in the
compost pile.
Articles on Growing Roses
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