Know your number. This little hygrometer shows the humidity and temperature right where your plant lives, so you can pick plants that fit your space.

• Shows humidity and temperature at a glance
• Comes with a little stand, so it sits upright on a shelf or table
• Magnetic back, so it sticks to a metal shelf, grow rack or fridge
• Small enough for a shelf, windowsill or terrarium
• Pairs with our Know Your Space guide

Tip from The Plant Lady: Most homes sit around 30–50% humidity, and Tucson air can stay below 30% for much of the year. Under 40%? Shop AZ Friendly and Humidity Heroes. Have a humidifier? Humidity Lovers will be happy.

Free with orders of $50 or more. Add one to your cart and it's free once your order reaches $50.