Global USDA Plant-Hardiness Zone & Species Checking Tool
Specific data for more than 50 different countries and about 30.000 species!
Researching Plant hardiness data at your fingertips.
There is no more need to first research your climate zone, followed by digging through various botanical databases trying to find a source for the species related zone data, to check if they will match or not.
All this information is now available within a minute and a few simple steps:
- 1. Select your country
- 2. Type in the zip code of your location, or choose a city close to you
- 3. Select the genus of the plant you want to grow
- 4. Select the species
Interpreting The Data
It is as simple as that, at least theoretically. USDA data is the international standart to measure hardiness. This System solely relies on the annual average minimum temperature. For most situations this can be totally fine and enough to know for your plants. One must keep in mind that this data should be more like giving an impression of what should be possible theoretically.
But why is that? Simply because there are many more factors available which can have a positive or negative impact on the growth. One problem can be too much heat in summer, too much or too little rain, wrong soil, light etc....
Microclimate can also cause divergence. e.g. one city belongs to one hardiness zone but during winter wind is always coming from one direction constantly what could cause completely different conditions which are both within the same zone and very close to each other.
- because you now know it could be inaccurate and do not blind trust any numbers. If you check a plant and you then realize that this species is already critically close to the zone map values, then you propably will be fine, but at least you'll be able to make an own established descision.
We will further improve this tool, update more species and supplement data like the preferred soil condition, sun exposure, moisture needs etc....
We really hope you will like this tool whether or not of being a beginner or an expert gardener.
Please feel free to drop us a line and share your opinion, ideas for further improvement, or to notify us if you have discovered any bugs
Our supporters and resources:
U.S. Department of Agriculture
University of Conneticut
Missouri Botanical Garden
NC State University