What does cress need to grow?

Miss Discombe’s class have been experimenting to see what cress needs to grow.

We planted some seeds with soil, sun and water. We thought these would grow – they were our ‘control’. We were right, they did.

We also planted some without one ‘variable’ – without sun, or without water, or without soil.

The ones with no water didn’t grow at all.

The ones with no soil grew a tiny bit but hardly at all.

The ones with no sun grew tall but were yellow and unhealthy looking. We wouldn’t eat them!