At some point, summer temperatures are going to end...
at least we think so. When that happens, we’ll need to bring our summer tropicals indoors, or at least those plants we want to save until next year. One example is hibiscus.
There are both tropical and hardy versions of hibiscus. The hardy ones are usually good outdoors over the winter, but if you want to save those tropical ones, they will need to spend the winter in your garage or someplace appropriate. To understand which plants need to come indoors, we need to talk about growing zones.
The USDA publishes information that divides the country into various growing zones. This information has to do with the average coldest temperatures a particular region gets. Historically, we have been in Zone 7A, but we are now in Zone 7B.
The difference between these two is how cold it is expected to get during the winter. The average lows for 7A are 0 to 5 degrees, while the average for 7B is 5 to 10 degrees. So, we have warmed up a little bit, in theory.
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