A Buyer's Guide to Greenhouses - Themometers and Hygrometers - X Large Stuff

A Buyer’s Guide to Greenhouses – Themometers and Hygrometers

Greenhouse gardens are wonderful things, and are one of the best way to tackle indoor gardening. That being said, they can be a challenge to manage efficiently and correctly. A lot goes into making a greenhouse garden the best it can be, but one of the most important issues is to be aware of is proper temperature and humidity management. Here we have a quick and easy greenhouse thermometer and hygrometer guide to ensure your garden stays in the right conditions.


You’ll definitely need a thermometer to start. This handy little item will let you know exactly how warm it is in your garden. If you know you’re only going to be needing to keep track of the temperature inside of your greenhouse, you’ll probably want to go with a standard min/max indoor thermometer.

Min/Max thermometers keep track of three important temperatures to be aware of. It will show you the current temperature of your greenhouse, the minimum temperature to watch for frost during colder months, and the maximum temperature for hotter seasons. Knowing these three temperatures will keep your garden in the right zone for growth and health, and are a must for greenhouse gardening.


Hygrometers measure the level of water vapor in the air within your greenhouse, and It is very important to keep your greenhouse at the correct humidity level for the plants you are growing. When buying a hygrometer, it is important to be aware of your intended place and purpose of use.

There are a lot of units to choose from, including mobile units and those more suited to a home environment, but if you’re looking to only keep track of your greenhouse then a standard wall mounted monitor will do just fine. Some meters come with extendable probes to take spot readings, but those are often limited to the mobile units, and are not fully required for greenhouse use.

Wireless, Digital, or Analog?

Now, you can buy an analog hygrometer if you really want, but if you go digital then most selections come with a built in min/max thermometer as well. It might be a little cheaper to go with an analogue unit, but in the long run you’ll save more money by looking for a 2-in-1 digital model instead. Not to mention, it’s nice only having to set up one device instead of two.

There are a few other benefits to wireless and digital monitors that we should cover. First, wireless units can often be checked remotely via smartphone apps. Digital monitors typically will provide a greater degree of information than an analog meter too. That being said, a good wireless and, or, digital monitor can be expensive.

If all you care about is being able to see the temperature and humidity levels when in your greenhouse, an analog meter will almost certainly be cheaper and will ultimately still get the job done right, just with a few less quality of life benefits than going with digital and wireless.