3 - Plants care
House plants depend on you to provide them with the five essential growth factors.
They are : 1.Warmth   2.Light   3.Air   4.Water   5.Food

1.Warmth
Mistaken belief that high temperature is essential for the house plants comes from the fact that most house plants come from the Tropic countries.
Without high humidity and high light intensity, high temperature can result in poor growth.
Because the amount of moisture and light in an ordinary room is much less than outdoors in the Tropic countries, Most of house plants will grow quite happily in ordinary rooms which are suitable for us.
Few types of house plants can grow at a temperature over 40 C. or under 5 C.
Sudden change of temperature is also harmful for the plant.

2.Light
Every house plant need some degree of light intensity. Some of them can tolerate low light intensity while some other plants are more sensitive to poor illumination.
Stems and leaves bend towards the source of light ( usually windows ).
From time to time turn their pot slightly to prevent them becoming deformed.

3.Air
In mild whether open the windows to provide fresh air to your house plants.
It helps them to have more resistant and stronger stems, but be careful to protect them against draughts which can be harmful.
Vapors arising from a number of sources like gas appliances, fresh paint, some heaters and chemicals are damaging to your house plants.

4.Water
House plants die without water but they don't need daily watering.
If you give them water every day, the soil will never dries out. The result is a soggy airless mass in which the roots cannot survive. When the leaves become yellow, a beginner give them more water. The situation get worse, and the plants die through over watering. They will be killed by kindness.
The best time to water a plant is when the soil is dry, but not completely.
Plants need moist air too. Increase the humidity of the air around the plant by spraying the leaves and stems, bathing them or keeping them on a stone (or something like that) inside a dish of water. Be careful that the bottom of the pot should be above the surface of water.

5.Food
Unlike outdoor plants which their roots can spread out to obtain adequate supplies for growth , the roots of house plants Rely on you to provide them with essential elements every time that supply of essential plant food has been exhausted from the compost.
The three essential elements are Nitrogen (N) which is leaf maker, Phosphates (P2O5) which is root maker and Potash (K2O) as the flower maker.
Fertilizers usually contain all these three essential plant foods.
You can see the following Web site for getting more information.

http://www.ces.ncsu.edu/depts/hort/consumer/hortinternet/houseplants.html

http://www.botany.com/

http://daylilies.plantsdatabase.com/star.php

http://www.flowers.org.uk/plants/caretips/care-tips.htm

http://www.flowers.org.uk/flowers/care-tips/care-tips_index.htm

http://www.iloveplants.com/

http://aggie-horticulture.tamu.edu/plantanswers/publications/houseplant/houseplant.html

http://mgonline.com/

http://www.emilysplants.com/


Availability & Price
Please see Dictionary of plants & flowers for The Persian and English name of the flowers and plants, their pictures, colors, availability during the year, Approximate prices and language of flowers .