Return to the Growing under Lights Forum | Post a Follow-Up

Can I supplement the sunlight on my balcony?

Posted by adastra09 9 (My Page) on
Wed, Mar 17, 10 at 17:50

Hello, I'm a begining gardener who just planted my first garden- a kitchen/container garden full of sun-loving plants (eggplant, cucumber, squash, tomatos, peppers) on my shaded balcony. On one hand, I think that may help since it's 85 degrees here today in Phoenix and it'll be in the hundreds by May so my plants will appreciate the break from the heat. Also, the walls of my balcony are a very light stucco so there is a ton of reflected light so it is actually very bright out there. My question is, is there any way I can supplement the sunlight out there? I was thinking of putting some full spectrum lightbulbs in the fixtures out there during the day. Are there any other lights/other things that I should try?

Follow-Up Postings:

RE: Can I supplement the sunlight on my balcony?

How many hours of sun are the plants getting?


RE: Can I supplement the sunlight on my balcony?

Like four hours of direct sun, probably about 8 hours of reflected sun

RE: Can I supplement the sunlight on my balcony?

You shouldn't need to. During just those 4 hours, they will be getting ~16 mols on a sunny day. Plan-ts grow great with a total of 20 mols a day.


RE: Can I supplement the sunlight on my balcony?

I did this and it was beneficial, but sunlight was a little more limited than yours. It's easy enough to hook up an outdoor MH or HPS floodlight to shine down on your plants, but remember that a 400 watt HID light (the strongest I've seen for outdoor use) will only illuminate about a 5 foot square area, and must be mounted a few feet above your plants. I had some hassles with neighbors, too; you can buy hoods to cut the light off at the edge, and of course the lights will only be on during the daytime, but some people may find a reason to complain whatever you do.

I'd try it for a season with what you have before spending money on the lights and electricity.

Here's an example of what you can do with outdoor lights in shade. Click on the picture for more details.

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Growing under Lights Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here