What is a cold frame?

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. What is a cold frame?

The Big Idea

A cold frame is like a tiny greenhouse! It sits right on the garden soil. How does it work?

A Clear Lid

Step one: A Clear Lid. A cold frame is a simple bottomless box with a clear lid that sits on the garden soil. Many are built from old windows and boards.

Trapping Warmth

Step two: Trapping Warmth. It works like a mini greenhouse, trapping the Sun's warmth. That protects seedlings and helps lettuce and spinach grow longer into the fall.

Prop It Open

Step three: Prop It Open. On warm days, the lid must be propped open to let air in. Otherwise the plants inside can get far too hot.

A Closer Look

Let's take a closer look! No bottom. Clear. Warms it. Grow longer.

Quick Facts

Quick facts! Cold frames can keep greens growing well into winter in some places. Old windows work great. Prop the lid when warm. Lettuce loves it.

Think Like a Scientist

Now, think like a scientist! Draw a plan for a cold frame. Draw four boards for the box. Add an old window as the lid. Show how you'd prop it open. What would you grow inside?

Outro

A cold frame is a bottomless box with a clear lid that sits on garden soil and works like a mini greenhouse. It traps the Sun's warmth to protect seedlings and grow greens longer, but prop it open on warm days. Science is amazing! The world is full of surprises. Keep asking big questions, and keep exploring with me! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!