Messages posted to thread:

Lindy15-Nov-02 12:42 AM EST 8a   
donna@icangarden.com15-Nov-02 12:53 AM EST 3a   
Lindy15-Nov-02 11:39 AM EST 8a   
Will Creed, Horticulturist15-Nov-02 03:40 PM EST   

Subject: RainGrow fertilizer
From: Lindy
Zone: 8a
Date: 15-Nov-02 12:42 AM EST

I recieved a 500g sample of liquid organic fertilizer from RainGrow. They stronly recommend fertilizing houseplants every 3 weeks even during the winter. Is this a good idea? I thought houseplants needed a period of rest. Mine look okay but this is their first winter in their new home. They have only lived here for 6 weeks.

Subject: RE: RainGrow fertilizer
Zone: 3a
Date: 15-Nov-02 12:53 AM EST

Hi Lindy...well, it depends on the plants you have, it depends on the strength of the fertilizer. If it is a really low fertilizer you could use it at half strength. I would just try it and watch your plants. Most plants like a period of rest especially if they are blooming plants.

The only plants I fertilize during the winter are my orchids and that is half strength..

Subject: RE: RainGrow fertilizer
From: Lindy
Zone: 8a
Date: 15-Nov-02 11:39 AM EST

The plants I have are spider plant, devil's ivy, grapeleaf ivy, dracanea, ornamental fig, cast-iron plant. The fertilizer is 4-2-3. They suggets 10ml per liter of water. The plants are doing good but with less to do outside it's hard to resist fiddling with things indoors. Maybe I should paint a room and leave my poor plants alone!

Subject: RE: RainGrow fertilizer
From: Will Creed, Horticulturist
Date: 15-Nov-02 03:40 PM EST

Hi Lindy,

Fertilizer sellers are notorious for over-selling their products. Most of the claims they make are quite fanciful. The dilution rates and application intervals are always based on OPTIMAL growing conditions, such that you find in a greenhouse.

Needless to say, most of our homes are a far cry from greenhouse environments. This is particularly true in winter when the hours of daylight are short. Most non-flowering and many flowering houseplants are non-seasonal and do not have a rest period. However, growth rate does slow down as light is reduced. As growth slows, so does the plant's use of water and nutrients. Thus, in winter, it usually makes sense to scale back on the water and fertilizer.

Here is my general advbice on fertilizing: Fertilize only at half-strength and only those plants that are growing vigorously AND have not had fresh soil in at least a year. Otherwise you are at greater risk for damaging your plants with excess mineral salts than you are of depriving your plants of essential nutrients.

Please let me know if this is unclear or if you have any additional questions. Will Creed, Horticulturist Horticultural Help, NYC Email: P.S. You may be interested in my website at

In order to post the forum, you must register to the site.
To register, click here.

If you have already registered, you must log in.
  • New Eden
  • Kids Garden
  • Plant a Row Grow a Row