From NCERTAsked by Anonymous from Mountain View, United States1 Oct 2026, 3:21 AM ISTUpdated
In one line
Yes, some plants have leaves that are not green.
Codiaeum variegatum — Species of flowering plant Croton plant, famous for its colourful leaves in red, yellow, and green. Image: WikipediaColeus — Genus of flowering plants Coleus plant, with leaves in purple, pink, and green shades. Image: Wikipedia
The rule
Most plant leaves are green because of chlorophyll (the green pigment for photosynthesis), but some leaves can be red, purple, yellow, or even variegated (multi-coloured) due to other pigments.
Let's understand it simply
Imagine walking in a garden or park. You usually see green leaves. But sometimes, you spot a croton plant with yellow, red, or purple leaves. Or you see a money plant with white and green patches. This happens because leaves have different pigments (colour chemicals). Green comes from chlorophyll, but other colours come from pigments like anthocyanins (red/purple) and carotenoids (yellow/orange).
How it works
Plants need chlorophyll to make food from sunlight (photosynthesis).
Chlorophyll is green, so most leaves look green.
Some plants have extra pigments like anthocyanins (red/purple) or carotenoids (yellow/orange).
These pigments can cover up the green or mix with it, making the leaf look red, purple, yellow, or spotted.
Some leaves change colour when they get old, in autumn, or if the plant is sick.
The story behind it
Scientists noticed long ago that not all leaves are green. They studied why this happens. They found that different pigments give different colours. These pigments can help protect the plant from too much sunlight or attract insects for pollination.
Where you see it in real life
Croton plant: Has leaves in red, yellow, orange, and green — pigments like anthocyanins and carotenoids make these colours.
Coleus plant: Leaves can be purple, red, pink, or yellow — lots of anthocyanins.
Money plant (variegated type): Leaves have white or yellow patches — less chlorophyll in those spots.
Bougainvillea: The colourful parts are actually leaves (called bracts), not petals.
Mango tree in autumn: Old leaves turn yellow or red before falling — chlorophyll breaks down, other pigments show up.
Purple cabbage: Leaves are purple due to anthocyanins.
Why it matters
Helps plants survive strong sunlight (extra pigments protect from sunburn).
Attracts insects or animals for pollination or seed spreading.
Makes gardens and parks colourful and beautiful.
Shows plant health — yellow leaves can mean a plant is sick or lacks nutrients.
Common mistakes
Thinking all leaves must be green — not true, many have other colours.
Believing coloured leaves cannot do photosynthesis — many still have some chlorophyll and can make food.
Mixing up flowers and coloured leaves — sometimes, what looks like a flower is actually a colourful leaf (like in bougainvillea).
Remember it
Leaves can be red, yellow, purple, or spotted — not just green! Look around, and you’ll see them.
Check yourself
Why are most leaves green?
Because they have chlorophyll, which helps in photosynthesis.
Name two plants with leaves that are not just green.
Croton and coleus.
Can a red or yellow leaf still make food for the plant? Why?
Yes, if it has some chlorophyll left, it can still photosynthesise.
What pigment gives leaves a purple or red colour?
Anthocyanins.
Quick recap
Not all leaves are green; some are red, yellow, purple, or multi-coloured.
Other pigments like anthocyanins and carotenoids give leaves their colours.
Coloured leaves can still do photosynthesis if they have some chlorophyll.
Plants use colourful leaves for protection and to attract insects.