You can take soil samples and send them to a lab and learn a lot about your soil. However, there are a few things someone can do at home to learn a lot as well.  Which of the following are things a gardener can do themselves to learn about their soil?单项选择题

A

'peanut butter' jar test to get approximate texture

B

All of these

C

simple pH test kit to get approximate pH

D

simple drainage test to see how well the soil drains

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