Growing Tips forum: Hoyas and Light

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Jul 3, 2010 1:02 PM CST
Name: Carol Noel
Hawaii (near Hilo)
It's all about choices.
This is taken word for word from an article David Liddle sent me years ago. It isn't totally complete, but it is all I got and there is good information here:


Most plants require light for Photosynthesis but each plant has a different light requirement because of where they live in their natural habitat. Plants react to differences in light intensity and because of this we can modify a plants look by changing the light intensity of the cultivation area.

A plant grown in a shady area, well nourished and watered, will have intense green foliage as it requires more chloroplasts to produce the same amount of sugar as one in bright light. The increase in light level is sometimes linked to an increase in colours other than green. Red is a common colour exhibited by plants exposed to bright light. The limiting factors to light intensity are,

1 Heat from the light source. Plants leaves should always feel cool, even in full sun.

2 Adequate nutrition and water are essential to enable the plant to photosynthesis and cool by transpiration of water from stomata on the leaves
3.Container grown plants can be affected by increased root temperature.

Light is measured in a number of ways and called different units, but here we will use the imperial term Foot candles. This is the amount of light produced by a candle at one foot in a dark space.

The general terms used to describe light intensity are:

FULL SUN. This is direct sunlight that is unobstructed for more than six hours a day.

PARTIAL SUN. This is about four hours of full sun a day or lightly shaded all day. 30% to 50% shade

PARTIAL SHADE. Less than two hours of full sun a day. 75% to 80% shade.

BROKEN SHADE. No direct sun but filtered light . 90% shade

DENSE SHADE. No direct sun at all. 100% shade, as under a solid roof.

Plants can show signs of stress if the light is not right.

Too Little Light.

1.Dark green leaves with no luster.
2. Each new growth smaller than the last.
3, Plant is floppy and weak looking.
4. Plant does not bloom well.
Leap. The net will appear.
[Last edited Jul 3, 2010 1:04 PM CST]
Quote | Post #298521 (1)
Jul 9, 2010 7:48 AM CST
Name: Alan
Chandler, AZ; 85225
Sunset Zone 13
So I have two Hoya that I purchased at the nursery, that are doing really well, even in our dry desert climate. One, I believe is getting ready to bloom.. I'll take pics when it blooms so we can see if we can identify it.

I just purchased two more Hoya's, one because I think the blooms are so beautiful on it. That is Hoya Meliflua . The other I liked because of it's round leaves, it is Hoya obovata. Does anyone have pictures of the blooms on this plant?

The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart. ~Hellen Keller
Jul 9, 2010 8:34 AM CST
Name: Lee Anne Stark
Ontario, Canada
Perpetually happy!
Big Grin Big Grin

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