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How to Plant Great Rose Flowers in a Greenhouse

rose flowers
With the right mix of light, water, heat, and fertilizer- you can have beautiful roses growing all winter long. Here, you will get to know how to plant, grow and harvest great rose flowers in a greenhouse.
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A greenhouse is an excellent place to grow your flowers. The great thing about a greenhouse is that you can heat and cool it for optimum plant growth. With the right mix of light, water, heat, and fertilizer- you can have beautiful roses growing all winter long.

The first step is choosing the kind of roses you want to grow. There are hundreds of different varieties, and each type has a unique set of care instructions.  So, you need to pick the one ideal for your project. 

Once you’ve chosen what kind of flower you want – purchase them from a reputable nursery, so they come with instructions you need to follow to get a bountiful harvest. Here, you will get to know how to plant, grow and harvest great rose flowers in a greenhouse.

How to Plant, Grow and Harvest Great Rose Flowers in a Greenhouse

Rose will respond favorably to proper care. Let’s take a look at a few techniques to keep roses growing in a greenhouse.

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Growing Roses Requires a Specific Climate

Roses thrive in both tropical and subtropical climates around the world. Temperatures between 15 and 28 degrees Celsius are ideal for rose cultivation techniques. During the growth and flowering phases, rose plants require 5 to 6 hours of sunlight.

In most cases, sunshine is required in a damp weather state or a gloomy setting ideally provided by a greenhouse. Roses may also thrive in temperatures below 15°C.

Use a greenhouse climate screen to help regulate the temperature ideal for rose flower cultivation in a greenhouse. 

Best Soil for Rose Farming in a Greenhouse

You’ll need a soil PH of 6 to 7.5 for a prosperous rose farming business; this is ideal for achieving a good yield. Rose plants thrive in sandy loam soils that are rich in organic matter and have enough oxygen.

Planting and Land Preparation

Rose flowers are commonly grown through seeds, budding, and cuttings; however, most farmers plant rose flowers from origins. First and foremost, in the rose farming greenhouse, plow the soil to make it weed-free and tilth.  

4 to 6 weeks before putting the plants in the greenhouse, sow the rose seed in nursery beds or pits. Create trenches or beds for spreading rose seeds 60 to 90 cm deep and 60 to 90 cm wide. Then, using soil and decomposing farmyard manure, fill the beds or pits and supply irrigation.

Watering  Roses

Keep the soil moist by watering your rose plants regularly. The amount of water you require will be determined by the weather; hotter, brighter days will dry out the soil faster than foggy, wet days. Allow no water to get into contact with the stems or leaves. 

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Fertilize new growth with a water-soluble rose food every two weeks, following the product guidelines.

Applying Fertilizer

Roses need the following nutrients.

  • Nitrogen
  • Iron
  • Magnesium
  • Potassium and phosphorus

You can use any fertilizer as provided you apply it frequently enough. The granular version is simple to use and does not require mixing. Water-soluble fertilizers are easy to use in a greenhouse and go to the roots fast, but they must be applied more frequently.

Although timed-release fertilizers are handy, they rarely provide enough nutrients to keep roses blooming. For an extended period, you’ll always need to boost with granular fertilizers.

Mulching Roses

First, fertilize your roses and water the soil surface, which should be free of old leaves and bushes before mulching. Spread a 1-2′′ layer of preferred mulch around the core of the rose plant and the width of the rose foliage. 

High-quality horticultural manure should compost straw or bark or well-rotted waste from a local farm. Fresh manure might burn the roots of your roses, so make sure it’s at least two years old.

Mulch shortly after the fertilizer application in late March/early April. If the mulch layer has vanished by autumn, a new application before wintertime may be helpful.

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Trimming the Roses

You will require a 40cm long stick, clean secateurs, gloves, and a bucket for pruning.  Push the post 10cm into the earth near the rose bush. The procedure will guide in cutting all stems to a height of 30cm. Keep the trimmings in the bucket. 

Cut off any withered stems or thin, fragile stalks that aren’t robust enough to support a bloom now. If any stems overlap and rub against each other, you may need to clip one of them off to avoid damage. 

Remove any remaining leaves and buds off the plant and place them in the bucket. You should have a 30cm-high shrub with strong-looking stems and a clean, airy greenhouse.

Harvesting Roses

Pick your flowers early morning or late in the evening, rather than in the middle of the day. You do so because that’s when temperatures are excellent, and the water content of the plant is high.

To get long, robust stems, make cuts in the plant. Remove the foliage from the branches that will be submerged since it will rot and promote bacterial growth.  You can trim the stems straight or on a slant.

Slant cuts prevent stems from sitting flat on the bucket bottom, allowing more water absorption.


If you consider starting a rose flower farm or adding to your existing one, there are many benefits of growing roses in the greenhouse. Some include fewer pests and diseases, more control over temperature, humidity levels, and soil composition. Growing roses in a greenhouse enable you to control weeds also.  

It has never been easier to take advantage of what greenhouses offer for your future flower bedding plants with modern technology. Planting roses is just the beginning. If you’re looking for some help getting started with your first greenhouse cultivation project, Eyouagro has experts to assist you. 

Eyouagro is a leading producer of world-class textiles for flower protection. We produce versatile netting products for your needs: sun protection, wind protection, pest protection, hail, and frost protection. These solutions enable you to increase your yield. 

Send us an inquiry today at, so we can get started on this rewarding journey together!

Hey, I’m Kevin Lyu, the founder of , Family-run business
An expert of agriculture protection textile specialist .
In the past 26 years, we have helped 55 countries and 150+ Clients like farms, orchards , vineyards to protect their plants. The purpose of this article is to share with the knowledge related to agriculture growing protection for making the plant healthier and stronger.
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Kevin Lyu
Agrotextile Specialists

Hey, I’m the author of this post,
In the past 26 years, we have helped 55 countries and 150+ Clients like farms, orchards, and vineyards to protect their plants and crops. 
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call us for a free, no-obligation quote
or discuss your solution.

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