Basically it means water moves through the soil in a timely manner that’s optimal for growth of most plants. 

Figuring out if you have well-drained soil is relatively easy.

What you need:

Trowel or hoe

Water

Watering can or hose

Watch

Follow the simple instructions below:

• Dig a hole 30 cm deep and 30 cm wide (1 foot by 1 foot)

• Fill the hole with water (use a watering can or garden hose)

• Watch to see how long it takes to drain

What does the time for drainage mean?

0-15 minutes: Your soil is sandy; it will not hold nutrients or water

30 – 60 minutes: Your soil is just right. It drains well

More than 24 hours: Your soil is too full of clay to drain well.