subscribe
YouTube
Pinterest
Twitter
Facebook
Instagram
Search

What Are The Best Indoor Grow Lights for Succulents?

By: Jessie Keith

“Now that the northern hemisphere is transitioning into winter, and I have more succulents than ever, what’s the best indoor grow light for me to invest in? Broad-spectrum? Red/blue lights? I’m confused.” Question from Stacy or Portland, Oregon

Answer: Plants always grow best with sunlight, which is full-spectrum. So, if you have a South-facing window that can accommodate your succulents, start there. Then supplement with full-spectrum grow lights where your sun-loving succulents are getting the least light. (Full-spectrum light covers all light wavelengths, from infrared to near-ultraviolet, which plants need to gather energy. This is because plant chlorophyll gathers light at all visible wavelengths and beyond (view the chlorophyll wavelength chart by clicking here).)

If you are just illuminating your plants with lighting, then you’ll need strong, full-spectrum lights. Consider the spectrum, lumens (the light amount emitted per second), and lifespan of bulbs before purchasing them. The higher the spectrum, lumens, and lifespan, the better.

Here are your indoor grow light options listed from the lowest to the highest price.

1. Fluorescent Lights: There are several ways to go with fluorescent bulbs. The cheapest way is to use a balance of warm/red and cool/blue bulbs. Together they cover much of the light spectrum, but not all. Some fluorescent bulbs are specially designed for plant growing and cover more of the spectrum–up to 94%. In general, fluorescent bulbs are not very strong, so they must be placed just inches above plants for best light reception and growth. Most growers choose shop-light fixtures, which support long bulbs.

2. Metal Halide (MH) and High-Pressure Sodium (HPS) Lights – These bulbs can be quite expensive (both the bulbs and fixtures) and have high heat output, but they are stronger and can be used to grow larger plants. MH bulbs cover much of the warm/red light spectrum, which is best for foliage growth, while HPS bulbs cover more of the cool/blue spectrum, which is best for flowering. For this reason, these bulbs are often paired to cover a full spectrum for plant growth. If you want to use both bulb types, choose a fixture that will accept each.

4. LED – Great strides have been made regarding full-spectrum LED growing lights, and they are now superior to both fluorescent and MH-HPS options. They can be pricy, but they are long-lasting, full-spectrum, lack heat output, and require less energy. They are also stronger and can be used to grow larger plants. Read the Ask a Garden Expert below to learn more!

I hope that this information helps clarify your question and your succulents shine through the winter.

Happy growing!

Jessie Keith

Black Gold Horticulturist

Best Full-Spectrum LED Lights for Indoor Growing

About Jessie Keith


Plants are the lens Jessie views the world through because they’re all-sustaining. (“They feed, clothe, house and heal us. They produce the air we breathe and even make us smell pretty.”) She’s a garden writer and photographer with degrees in both horticulture and plant biology from Purdue and Michigan State Universities. Her degrees were bolstered by internships at Longwood Gardens and the American Horticultural Society. She has since worked for many horticultural institutions and companies and now manages communications for Sun Gro Horticulture, the parent company of Black Gold. Her joy is sharing all things green and lovely with her two daughters.

Leave a Reply

Content Disclaimer:

This site may contain content (including images and articles) as well as advice, opinions and statements presented by third parties. Sun Gro does not review these materials for accuracy or reliability and does not endorse the advice, opinions, or statements that may be contained in them. Sun Gro also does not review the materials to determine if they infringe the copyright or other rights of others. These materials are available only for informational purposes and are presented “as is” without warranty of any kind, express or implied, including without limitation warranties of merchantability, fitness for a particular purpose, and non-infringement. Reliance upon any such opinion, advice, statement or other information is at your own risk. In no event shall Sun Gro Horticulture Distribution, Inc. or any of its affiliates be liable to you for any inaccuracy, error, omission, fact, infringement and the like, resulting from your use of these materials, regardless of cause, or for any damages resulting there from.

While we have made every effort to ensure the information on this website is reliable, Sun Gro Horticulture is not responsible for any errors or omissions, or for the results obtained from the use of this information. All information in this site is provided “as is”, with no guarantee of completeness, accuracy, timeliness or of the results obtained from the use of this information.

Use of this site is subject to express terms of use. By using this site, you agree to our Terms of Use

View Our Privacy Policy