Daffodils are forced for three different markets: the early cut flower
market, the regular season cut flower market, and the potted plant
market. Plants grown for these three purposes must be treated
differently. In addition, the paperwhite narcissus N. tazetta, does
not require a chilling period, and so follows a different schedule for
pot and cut flower production.
EXTRA-EARLY FORCING OF CUT NARCISSUS (used mostly in the United
Kingdom)
For cut daffodils, extra early forcing requires a precooling treatment
beginning in the summer. Bulbs are usually lifted in early June, and
briefly exposed to high temperatures 95 F (35 C ) for 5 days to insure
floral bud differentiation within the bulb. The bulbs are then held at
about 62.5 F (17 C) or ambient temperatures until the flower primordia
reach the paracorolla (Pc) stage. The Pc stage is the point in the
development of the flower primordia within the bulbs at which the
corolla (trumpet) is visible in a dissected bud. Upon reaching the Pc
stage, the bulbs are given a precooling treatment of 48 F (9 C) for 6
weeks. In August or September the bulbs are planted, and are chilled
in the rooting room for 6 more weeks at 48 F (9 C). Finally, they are
moved to the greenhouse for forcing, usually arriving at full bloom
within the month, around 20 November. The cut stems are harvested in
the gooseneck stage, and stored upright, dry, at 32 - 35.5 F (0 - 2 C)
with over 90% relative humidity.
FORCER'S SCHEDULE FOR EXTRA-EARLY CUTNARCISSUS:
At paracorolla stage - 48 F (9 C )for 6 weeks (precooling)
August to mid-September - pot and hold in rooting room for 6 weeks at
48 F (9 C)
October/November - move to greenhouse for forcing
November - harvest
REGULAR SEASON FORCING
The regular season for cut Narcisssus runs from mid January to
mid-April. Prior to planting, the bulbs should be stored in a cool,
dry environment. Bulbs should be inspected for disease and damage, and
then given plenty of ventiliation. After potting, Narcissus should be
held at low temperatures 48 F (9 C) until 1 - 5 December. Then the
temperature must be reduced to 41 F (5 C) until 1 - 5 January. After
that, the temperature in the rooting room is reduced to 32 - 35.5 F (0
- 2 C) until the plants are moved to the greenhouse for forcing. This
final length of rooting room chilling is determined by the producer's
chosen date for harvesting and selling the plants. Also, chilling
requirements vary from cultivar to cultivar. Most daffodils need
approximately 18 weeks total in the rooting room. The forcing period
also varies among cultivars, ranging from 7 to 28 days. General
guidelines are given below; for specific cultvar requirements, refer
to the Bulb Forcer's Guide. Forcers should harvest the cut stems in
the gooseneck stage, and store upright, dry, at (0 - 2 C) with over
90% relative humidity. Retailers should recut the stems at about 1/4"
from the end and harden in about 7 inches of lukewarm water. DO NOT
harden in the same water with tulips, as the daffodil sap decreases
the tulips' vase life.
FORCER'S SCHEDULE FOR REGULAR SEASON CUT NARCISSUS:
Preplanting storage - 55.4 F (13 C) for untreated bulbs or 48 F (9 C)
for preecooled bulbs
October - pot and hold in rooting room at 48 F (9 C)
1 - 5 December - reduce temperature to 41 F (5 C)
1 - 5 January - reduce temperature to 32 - 35.5 F (0 - 2 C) until
forcing
After moving to greenhouse, harvest within the month.
POTTED NARCISSUS
The market for potted Narcissus is from late December to mid-April.
Using controlled temperature rooting rooms and different planting
dates allows the grower to produce high quality flowering daffodils
throughout that period. There are two chilling schedules for potted
daffodils: A and B. Which schedule you follow depends on the desired
marketing time for that particular crop of daffodils. It is neccessary
to use precooled bulbs to have blooming plants for the very earliest
market (late December and January). The optimum length of cold storage
varies by cultivar. Crops for harvest from late December through late
January need 13 - 16 weeks of chilling, while crops flowering later
receive progressively more cold, with a maximum of 23 weeks. Refer to
the Bulb Forcer's Guide for the chilling requirements of specific
cultivars. Market potted Narcissus at the "pencil stage" before the
buds begin to point down.
FORCER'S SCHEDULES FOR POTTED NARCISSUS:
Rooting Room A
48 F (9 C) to Nov 5 or till the roots grow out of the bottom of the
container
41 F (5 C) to Jan 1 or until the shoots are about 1 inch tall.
32 - 35 F (0 - 2 C)
Rooting Room B
48 F (9 C) to Dec 1 or till the roots grow out of the bottom of the
container
41 F (5 C) to Jan 1 or until the shoots are about 1 inch tall.
32 - 35 F (0 - 2 C)
PAPERWHITE NARCISSUS
Paperwhite narcissus (N. tazetta) are popular, fragrant, white
daffodils which are grown for cut flowers and as potted plants. They
do not require a chilling period, and are usually stored dry at warm
temperatures until they are forced in the fall. Forcers should pot the
bulbs immediately upon receiving them, and grow them in the greenhouse
at approximately 5000 ft candles, with 60 - 63 F (16 - 17 C) night
temperatures. If needed, 2000 ppm Florel can be used to retard the
stem length of paperwhites in pots; it should be applied when the
shoots are 4 - 5 inches tall. The flower stems should be harvested
when the first floret is fully colored, and may be stored at 32 - 35 F
(0 -2 C). The potted plants are ready for marketing when the shoots
are 8 - 10 inches (20 - 25 cm) tall, and the flower buds are visible,
but do not show color. Potted paperwhites may be stored at 35 - 41 F
(2 - 5 C). In the lower southern U.S. (zones 9 and 10), paperwhites
can be grown outside as perennials.
Planting and Forcing Protocols
Daffodils require a pH of 6 - 7, and a mix low in soluble salts. A
lightweight peat mix is desirable. For cutting, the bulbs should be
planted close together, and are usually grown in 4" deep flats. About
1/3 of the bulbs should be above the soil surface. Cut flower
paperwhites are usually grown bulb to bulb, with around 40 15/16-cm or
16/up-cm sized bulbs per flat. Six-inch pots of daffodils should
contain 3 bulbs, and 8-inch bulbs pans hold 5 to 6 bulbs. Certain
smaller cultivars, such as 'Tete-a-tete', 'Jumblie', 'Minnow', and
'Jack Snipe', can be grown in 4-inch pots. A 6-inch pot usually holds
4 - 5 paperwhite bulbs, and 7 - 8 paperwhite bulbs can be grown in an
8-inch pan.
The ideal temperature for forcing Narcissus< in the greenhouse is 55 -
63 F. The flower quality is best around 55 F, but the plants grow
faster at 63 F. However, care must be taken that the temperature does
not exceed 65 F, as this causes a disorder called bull-nosing, in
which the buds fail to develop beyond the goose-neck stage. The
optimal plant height for potted daffodils is 25 - 35 cm (10 - 14 in),
and for cut flowers, at least 14 in. If need be, the stems may be
stretched by laying newspapers over the plants for a few days.
Twisting their little arms might help. :) I remember seeing something about
that, but a gardener, I'm not. I'm sure someone will be around shortly to
advise you. *hugs*
--
Princess fmomoon, the music witch,
Proprietress of the Cuddleland Cafe
Cyber twin sister to Squire Fluffy
Member of the Red Head Brigade
>I just wanted to thank EVERYone for responding to my survey! and for
>welcoming me so warmly! *HUGS* you're all great. Hubby just made apple
>cinnamon sticky rolls and you are all welcome to them. Does anyone know
>anything about forcing bulbs indoors? I was wanting some for when it gets
>dreary in January and February, but it looks complicated. what's the
>easiest to grow? and are there any that you don't have to throw away
>afterwards. I know this isn'ta gardening group, so if my questions are
>inapropriate, I'm very, very sorry. But gardeners tend to say big words I
>don't know and confuse me. Thanks!
>*hugs*
>Jenna
>
>
You might check out Rebeccasgarden.com..(think that is the url) or
Martha Stewart site. They would be ones to have instructions. I think
you have to keep them in a paper bag in the fridge for a few weeks
first.
*Blessings be*
Synn
I shall be telling this with a sigh
Somewhere ages and ages hence:
Two roads diverged in a wood and I..
I took the one less travelled by,
And that has made all the difference
*
Robert Frost
"Synnoveah J Cooke" <Synno...@earthlink.net> wrote in message
news:9ul92ts569eol3jm0...@4ax.com...