Alright kiddo, so a cloche is like a little house for plants. It's like a mini greenhouse that farmers or gardeners use to protect their plants from cold weather or pests.
The cloche is usually made out of a transparent material like glass or plastic, and it's placed on top of the plant. This keeps the plant warm and helps it grow even in chilly weather.
Sometimes, farmers or gardeners will use a cloche to help a plant grow faster too. Because the cloche traps in warmth and moisture, the plant gets an extra boost and can grow bigger and faster than it would normally.
So basically, a cloche is like a cozy little house for plants that helps them grow strong and healthy even in tough conditions.