How to Use LED Grow Lights to Get Higher Rose Market Price

Roses are well-known for its showy flowers and delicate fragrance. They are often grown as ornamental and landscape plants. They also have high commercial values as perfume and cut flower crops. For rose growers, profit, or ROI (Return of Investment) is the key consideration for rose cultivation. Therefore, roses are grown in greenhouses widely with advance equipment and control system to achieve higher yields and year-round production. LED grow lights is one of the most useful equipment to help growers reach their goal easier due to their high efficiency, low energy consumption, and long lifespan. So, how to use LED grow lights to get higher rose market price and allow growers reap more profits?

Just read this post and find the answer. Since we would like to get higher market price of the rose, this post will show the aspects affecting the price at first. Then, you can learn the effects of LED grow lights on roses. At last, you can use LED grow lights to improve the rose quality and achieve higher market price.

Aspects of roses that affect their market price

Roses are woody perennial flowering plants belonging to genus Rosa. There are more than 100 species of the genus rose. Their flowers have a wide range of colors, such as red, yellow, and white. The flowers also have various sizes and shapes. The base of shoots mostly have many labial leaves.

There are a number of quality characteristics can affect the price of rose, while the most important one is the stem length. The stem of rose with sufficient length can get good prices. Except for the stem length, variety also plays significant role in market prices of rose. For example, roses in blue, green, and dark purple are more expensive than red roses. This is because those roses are difficult to cultivate, and the supply of them is limited. Other aspects such as the bud size, flower size, and stem diameter also have vital effect on the market price.

Effects of LED grow lights on roses

Light quality, level, and duration are the three main factors of LED grow lights that affect the rose growth. Light quality and light level have direct effects on photosynthetic reactions. Here, we mainly discuss the effects of light quality and light level of LED grow lights on roses.

• Light quality affects the adventitious root formation, blind shoots numbers, and stem length

Light quality refers to the spectral distribution of LED grow lights. It can affect the adventitious root formation, blind shoots numbers, and stem length.

A survey showed that red light affect the biomass production and the adventitious root development greatly. The root biomass of rooted cuttings with the combination of red light and white light LEDs in growth chamber was about 2.2 times higher than of rooted cuttings with white LEDs only. Similarly, the root biomass of rose rooted cuttings grown in greenhouses resulted in 1.7 times increase with the addition of supplemental red light than sole natural light.

Many floriculture plants show the ‘shade avoidance’ response to low R/FR (Red/ Far-red), so as roses. Most red light is intercepted by the leaves while far-red light is reflected or transmitted. Roses will elongate more, have fewer branches, and develop more blind shoots under low R/FR condition. The low R/FR also reduces chlorophyll content in leaves and extends the stems, while far-red light improves blind shoots.

• Light level affect lateral shoots and flowering

Light level, or light intensity greatly impact the growth of lateral shoots and flowering. The research showed that with the increase of light level from 90 µmol·m¯²·s¯¹ to 180 µmol·m¯²·s¯¹, the dry weights of shoots and roots of roses increased tremendously. The length of shoots were also enhanced with the increase of light level. But the increase of light levels did not always helpful to the growth of lateral shoots. No further shoot elongations occurred at certain high light level.

Using LED grow light to improve the light level can simulate flowering during periods of low light, such as winter or cloudy days. High light level contributes to a larger number of flowers under low solar radiation conditions. However, the high light level is detrimental to plant growth and flowering in summer. This is because high light level is negative to photosynthesis in summer.

LED lighting solution for higher rose market price

Roses with long stem, attractive flowers, and thrive branches worth the high market price. To achieve higher market price of rose, LED grow lights should be able to enhance stem length, promote flowering, and forming robust rose. From figuring out the effects of LED grow lights on roses, we can find that full spectrum LED grow light fitted with far-red light is the prefect solution for rose. Atop provides Horti-Flag with a light spectrum that is typically designed for rose cultivation to help growers get higher rose market price. In addition, Horti-Flag is the ideal replacement for HPS lights. A 300W Horti-Flag is a great equivalent replacement for 630W HPS light, which means you save energy cost significantly by retrofitting traditional grow light to our Horti-Flag.

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