Mark Anderson expounded:

Does anyone have any idea as to how to save this? I can't believe the
root system would just die off like that. If I cut the entire plant down
will the roots spawn new stems? I since moved the plant from
fluorescents and placed it under my new HID High Pressure Sodium lights
for my indoor winter garden. It gets 14 hours of "sunlight" now.

Here is a repost discussing the potting up of Rosemary to bring it in
for the winter:

Many people have asked how to overwinter Rosemary. A friend of mine,
a fellow member of the New England Unit of the Herb Society of
America, put this in our recent newsletter, the Pennyroyal Papers. I
hope it helps someone )

Success with Rosemary by Deb Peterson

1. Rosemary can stay outside until the temps stay below 45°. It can
withstand some frost (Don't let the pot freeze in the ground, though,
so you can't dig it out).

2. Bring it into the coolest part of the house. Rosemary is happy
with night time temperatures in the fifties or even the forties.

3. Give it as much light as possible.

4. A DRY ROSEMARY IS A DEAD ROSEMARY (not shouting, but emphasis).
Don't let it dry out, but don't keep it too wet. Texas potting is the
secret to this dilemma. (It is remarkable drought tolerant in the
summer out in the garden) Texas potting is explained below.

5. If your rosemary should develop powdery mildew, spray lightly with
a mixture of one tablespoon alcohol to a cup of water. Give it a
chill outside on a warm winter day. Powdery mildew is due to a lack
of air circulation.
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Texas Potting:

You will need:

1. Steak or roast carving fork (2 prongs)
2. A bag of perlite.
3. Appropriate sized plastic pots.
4. A source for flame

Heat the steak fork and make a double row of holes around the bottom
of the pot.

Make another row of holes just below the watering lip.

Put the perlite in the bottom of the pot to just cover the double
holes around the bottom.

Pot up your plant with regular potting soil. Water well.

Put the potted plants in a water tight container and fill the
container to any height to just above the bottom row of holes (this is
a great way to leave plants when you travel).

The secret of this system is the upper row of holes. These holes
supply air to the roots. Clay pots are porous and can be used without
making air holes. If you use clay, put at least 2" of perlite in the
bottom. This system also works well with cyclamens.
--
Ann, Gardening in zone 6a
Just south of Boston, MA
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