This is a public-interest archive. Personal data is pseudonymized and retained under GDPR Article 89.

RE: Tamara on zones near Dallas

Tamara said,
>For the longest time, I couldn't figure out if I was in zone 7 or 8, the
line seemed to run
>right through the city!  Just recently I found a map the subdivided the
>zones into a and b.  Now I can't figure out if I am in zone 7b or 8a!

My county (Prince Georges, Maryland, just outside DC) is split up the middle
between 6 and 7, so I feel Tamara's pain.

However, this issue is not worth worrying about.  If your site is, say,
beside a warm south-facing brick wall of your house, choose the
higher-numbered (warmer) zone for plant-related purchases and growing
decisions.  If your site is in a frost pocket (depression) on a north-facing
hillock, go the other way and choose the lower-numbered (colder zone).

The A/B distinction is not too important, IMO.

And remember, the USDA zone map is only about one thing:  average minimum
temperature over the winter.  That's because USDA plant folks believe that
cold hardiness is a deal killer in terms of plant survival.

But the American Horticultural Society has just issued a new zone map based
on summer heat!  Where I live, summer heat and humidity are definitely worth
taking into consideration.

--Janet

--
To unsubscribe, send a message to: majordomo@lists.umsl.edu
with the single body line: unsubscribe sqft
Contact owner-sqft@lists.umsl.edu with any admin questions.
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index