Add Color To Flowers Using Science

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Many florists sell colored carnations, but I think it is more fun to make your own! And you can learn a little something about plants in the process.

Best of all, you can make the flowers just about any color you want. Start off with some white carnations from your local florist. If you just want to demonstrate how plants transport water, and watch color move through leaves, you can also perform this experiment using celery.

You will also need: Food coloring, Some small cups, Water.

Decide what colors you would like the flowers to be and then add that color to your glass.

You will need to add enough food coloring to create a strong color in the water, just a few drops of coloring will not have much of an effect. Our blue looked more like black after adding enough color. Snip the last centimeter of your carnation steam and place the stem in the colored water. Now just wait. Over the next day you will see signs of the coloring emerge in the petals, and even in the leaves. Our experiments have shown that sometimes the color emerges within a few hours, other times it takes a day or two. You can make green flowers for St Patrick’s day, red for valentine.

We tried splitting the stem with a razor (teacher guidance required) and we then placed each stem into a different color of water. Sure enough the flower became multicolored. We wonder if it would work with three colors.

So how does it work? This is the science of TRANSPIRATION. It basically means that the plant draws water up through its stem. The water is then evaporated from the leaves and flowers through openings know as stomata. As the water evaporates, it creates pressure that brings more water into the plant – similar to drinking from a straw. Some trees can transpire hundreds of gallons of water on a hot day. How fast a plant transpires depends on temperature, humidity, and even wind. You may want to set up an experiment that tests the transpiration rate of the flowers by placing your plant-coloring set-up in different areas (sunny & dark, windy& still, dry & humid) and see which flower ends up with the most color – more color = more transpiration. By the way, most flower shops do not color their flowers this way. There are many different breeds of flowers that are capable of producing a wide variety of flower colors. 

Posted By : Prashant Singla, Class 10, GOODLEY PUBLIC SCHOOL
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Srishti Paul

we've done this experiment in school,and it really very magical...interesting experiment

Posted on : 17-12-2017 06:10:30


How much time is required for this to happen? Very interesting.

Posted on : 14-01-2018 07:10:17

D.Jai Ram Naga Nevan

It's so magical!!!!! I tried it in my home

Posted on : 09-03-2018 05:01:04

Raya Karmakar

Your an awsome writer . May God bless you so that you may proses befor

Posted on : 13-03-2018 10:34:01

Gode Sapana Darku

Its good but can this remain for long period ,its interesting

Posted on : 06-04-2018 06:28:58

Ilesha Ojha

does this,like, harm the plant?

Posted on : 07-04-2018 07:45:59