Re: hardiness limits

At 07:39 9/04/99 -0400, Erik wrote:
>... Last winter saw temp's at a low of 8F several nights,
>and a number of southern hemisphere "zone 7" plants died back to the mulch
>level, but appear to be sprouting back: Euc's dalrympleana, johnstonii, and
>gunnii died back to the main stems, but the tips are now growing out again.
>Euc's niphophilia, neglecta, and glaucescens are dead to the mulch line,
>but resprouting. Euc. moorei nana did the best, with perhaps 50% of the
>leaves burning, but the new growth remaining green, and now resuming
>growth.

I reckon you were very unlucky with your snowgums (E nivophilia).  I don't
know anywhere they grow natively where they *wouldn't* get "a low of 8F
several nights" each and every winter.  They are the most cold-tolerant tree
on mainland Australia, some varieties regularly spending 3-6 months under
meters of snow without any dieback.

 All plants were in gallon pots, sunk into deep mulch beds in
>September, so they did not have the resilence of older more established,
>more woody plants.

Maybe you're over-fertilising (just guessing)?

John.
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