How does street light affect growth/shedding of tree leaves?

bcakeDecember 18, 2011

As trees close to street light are exposed to light 24 hours a day i'm curious to find out how this affects the trees.

I've looked up on long-day and short-day plants, but it seems that these are only concerned with blooming, whereas i'm concerned with the growth and shedding of the leaves. Does this mean that hybrid trees cannot be long-day plants?

Is there any way of telling if plants are long- or short-day?

Thank you for reporting this comment. Undo
rhizo_1 (North AL) zone 7

The duration of light is probably not as important to plants as the quality of the wave lengths. Some street lamps affect plant growth much more adversely than others. The attached link describes some of the problems associated with some street lights.

Photoperiodic response in plants varies from species to species. They will fall under one of three categories: short-day, long-day, and day-neutral. Those that are short-day plants respond to nights longer than about 12 hours (thus, short day). Those plants will be induced to flower under those conditions.

Long-day plants are triggered to flower when the nights are shorter than around 12 hours. Day-neutral plants don't respond to the number of hours of darkness, but will bloom according to other requirements.

You can look up any plant on the internet to find out its photoperiodic category. And hybrids can certainly be long day plants. Or short day or neutral.

Here is a link that might be useful: Effects of street lighting

    Bookmark   December 22, 2011 at 4:33PM
Sign Up to comment
More Discussions
Plant ID needed!
Can you please ID this plant for me? It is potted in...
grafting compatibility
Hi, is there any logic about matching rootstock and...
ok to grow an entire poplation of plants from one motherplant?
If i were to buy a single flowering, hardy pond plant,...
Changes in Flowering Time
Hello! I'm a postdoc at Harvard, studying flowering...
Population (genetic) diversity in home landscaping?
Hi, My question concerns: how long a perennial wildflower...
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™