Our Greenhouse . . .
Our first greenhouse was built in 1993 and was 20' X 36' with
an 8' crown.  After the fourth year, we decided that it was just
too small so we replaced it with the current greenhouse which
is 30' W X 44' L, with a crown of 14' 6", which doubled the
square footage of the original.

Utilizing a greenhouse for growing and hybridizing daylilies
has several advantages. 1) You can do your hybridizing in
the early spring before outside work starts. 2) Seed set is
better in agreenhouse and some plants that will not set seed
outside will do so in the greenhouse. 3) When outside work
and evaluating seedlings starts, you are through with
hybridizing. 4) You can start seeds earlier and grow the
resulting seedlings in the greenhouse over winter, thus giving
them a head start when transplanting outside in the spring.

One of the reasons for having a greenhouse is to be able to
hybridize while it is still cold outside. We normally take our
potted hybridizing plants into the greenhouse in mid to late
December after they have been through cold weather. They
will start blooming in March and we can begin our hybridizing.
We will have approximately 100 pots of hybridizing
plants growing in the greenhouse.

When potted plants are taken into the greenhouse,
they are cleaned, Bayer Tree & Shrub, a granular
systemic, is spread on top of the potting soil to
control fungus gnats, thrips, aphids, etc. Next,
Nutricote slow release 18-6-8 fertilizer with micro
nutrients, along with a little Milorganite is added
on top of the potting soil for fertilizing.

Temperature in the greenhouse is important when
you start hybridizing. The late Dr. Bob Carr always
said, “Trying to set seed at a temperature under
60° or above 90° is futile.” So as bloom starts, the thermostat
gets turned up to 65° and the exhaust fan is set for 80°.

water the plants. Misting is primarily used to help keep down
spider mites. Otherwise, potted plants are watered by hand
as needed, the more sun, the more hand watering. We have
been experimenting with growing everything in the
greenhouse in water beds. So far, we have been very
pleased with the results.

There are two moving 1000 watt high pressure sodium lights
on rails above each of the two hybridizing benches. The lights
are turned on for one hour each morning about 1:00 A. M.
just to break the sleep cycle.

We normally start between 1,00 and 2,000 seeds in July and
August.  In September, we transplant some of  those
seedlings to trade one- gallon pots, where they will grow in
water beds. Many of those seedlings will bloom in the
greenhouse in June and July.
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Our current greenhouse built in 1967.
The ends are double walled
polycarbonate. The top and sides are
double sheet 6 mil. plastic with air
blown between.
Hybridizing daylilies is as easy as
putting pollen from one daylily on
the pistil of another daylily.
Seedpods in the greenhouse.
A closer view of the seedlings in
trays and pots growing. They are
growing in about 1" of water. As the
plants root, the roots grow out of
the containers into the water. A
weak solution of water soluable
fertilizer is used for the water bath.
There are four growing benches
in our greenhouse, the  two on
the sides are 4' wide and 40'
long and are used for growing
seedlings. The other two are in
the middle and are 4' wide and
are 36' and 32' in length. One of
these is used for growing the
potted hybridizing plants. The
other, seedlings.

We have a misting system set
up above each growing bench.
However, it will not sufficiently
Imagine walking into the
greenhouse on a cold,
snow March morning to
hundreds of glorious
daylily blooms awaiting
pollen to be dabbed
and seeds to be set.
This is what happens in
a greenhouse.
Chattanooga Daylilies