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Winter
. . . 
 Winter, the days are short and cold and
the nights are long. This is where your prior scheduling really pays off.
Unless you have supplemental heating and lighting you will find that this
time of year is when many plants seem to grow in slow motion. Still, good
yields of many plants can be had if you follow proper scheduling.
The main thing you should know is that planning
and proper scheduling is key for winter production in the greenhouse.
For more complete scheduling information
please consult the book 'Greenhouse
Gardener's Companion.'
The following scheduling information is a book excerpt from Greenhouse Gardeners Companion
Copyright 2011 2012
by Shane Smith-
Unauthorized copying or printing is prohibited.
SCHEDULE
In the
following chart applies to the United States home hobby greenhouse
production. The term “grown warm” refers to agreenhouse that has
night temperatures consistently above 50° F (10° C). When the chart
refers to “grown cool,” it is for a greenhouse with night temperatures
that consistently run below 50° F (10° C). Keep in mind that the cooler
the greenhouse, the slower your plant will grow and come into bloom
Ornamental plants schedule for Winter
Note:
All bloom dates are approximate. An asterisk (*) indicates that you should
add up to 3 months or more if you propagate from seed. If you see the word
“next” it means that the harvest will be 12 months past that month.
Plants Started in December
& January
|
Plant
Name
|
Bloom Date
grown warm
|
Bloom Date
grown cool
|
Best method of propagation
|
|
Begonia
(tuberous)
|
April
|
May
|
Seed/tuber*
|
|
Calendula
|
March
|
April
|
Seed
|
|
Carnation
|
May
|
June
|
Seed/cutting*
|
|
Centaurea
|
April
|
May
|
Seed
|
|
Cyclamen
|
November
|
January (next)
|
Seed/corm
|
|
Geranium
|
June
|
June
|
Seed
|
|
Gloxinia
|
July
|
August
|
Seed/cutting*
|
|
Kalanchoe
|
December (next)
|
February (next)
|
Cutting
|
|
Larkspur
|
May
|
June
|
Seed
|
|
Marigold (African)
|
April
|
May
|
Seed
|
|
Mina lobata
|
April
|
May
|
Seed
|
|
Nemesia
|
May
|
June
|
Seed
|
|
Nicotiana
|
March
|
April
|
Seed
|
|
Pansy
|
March
|
April
|
Seed
|
|
Petunia
|
April
|
May
|
Seed
|
|
Poppy
|
April
|
May
|
Seed
|
|
Primrose
|
December (next)
|
February (next)
|
Seed
|
|
Ranunculus
|
April
|
May
|
Bulb
|
|
Salpiglossis
|
May
|
June
|
Seed
|
|
Snapdragon
|
April
|
May
|
Seed
|
|
Stock
|
April
|
May
|
Seed
|
|
Sweet pea
|
April
|
May
|
Seed
|
Plants Started in February
& March
|
Plant
Name
|
Bloom Date
grown warm
|
Bloom Date
grown cool
|
Best method of propagation
|
|
Bedding plants
|
April
|
May
|
Seed
|
|
Begonia
(fibrous)
|
June
|
June
|
Seed/cutting*
|
|
Begonia (tuber)
|
June
|
July
|
Seed/tuber*
|
|
Carnation
|
June
|
August
|
Seed/cutting*
|
|
Christmas cactus
|
December
|
December
|
Cutting
|
|
Dahlia
|
July
|
August
|
Seed/tuber*
|
|
Fuchsia
|
June
|
July
|
Cutting
|
|
Geranium
|
June
|
June
|
Cutting
|
|
Jasmine
|
December
|
February
|
Cutting
|
|
Kalanchoe
|
December
|
February
|
Cutting
|
|
Larkspur
|
May
|
June
|
Seed
|
|
Maple, flowering
|
August
|
September
|
Cutting
|
|
Marguerite daisy
|
July
|
August
|
Cutting
|
|
Marigold
|
April
|
May
|
Seed
|
|
Mina lobata
|
April
|
May
|
Seed
|
|
Morning-glory
|
May
|
June
|
Seed
|
|
Nicotiana
|
May
|
June
|
Seed
|
|
Petunia
|
April
|
May
|
Seed
|
|
Pineapple sage
|
October
|
October
|
Cutting
|
|
Poppy
|
May
|
June
|
Seed
|
|
Primrose
|
December
|
March (next)
|
Seed
|
|
Salpiglossis
|
June
|
July
|
Seed
|
|
Schizanthus
|
March
|
May
|
Seed
|
|
Snapdragon
|
May
|
June
|
Seed
|
|
Statice
|
July
|
August
|
Seed
|
|
Stock
|
May
|
June
|
Seed
|
|
Swan River daisy
|
June
|
July
|
Seed
|
|
Sweet pea
|
May
|
June
|
Seed
|
|
Zinnia
|
May
|
June
|
Seed
|
Click here- Vegetable
Schedule for cool greenhouses
It is time to be ordering seeds for Spring for
seed sources click here.
Get your own complete year-round vegetable
and ornamental schedule found in the book:
Greenhouse
Gardener's Companion
Vegetable
Schedule
Planting Growing and Harvesting (P, G, H) Schedule
The following schedules are coded like this:
P
designates a possible month to plant the crop.
G indicates good months to be growing the crop toward maturity.
H
means the crop, if grown to maturity, could be harvested during these
months.
There are many variables involved in growing vegetables in a
greenhouse that make it difficult to be totally accurate. But this general
guide should help you in much of your planning.
The chart below applies to greenhouses that run winter night
temperatures above 45° F (7° C) and to solar greenhouses that are in a
climate that receives a winter monthly average of 45 percent or more of
possible sunshine as listed by your closest National Weather Service
office (see Average PERCENT OF
SUNSHINE for selected
locations across the United States.)
M o n t h s
|
Crop
|
Dec
|
Jan
|
Feb
|
|
|
|
|
|
|
Beans, bush
|
|
|
P
|
|
Beans, fava
|
P
|
PGH
|
PGH
|
|
Beans, lima
|
|
|
|
|
Beans, pole
|
|
|
|
|
Beets
|
PGH
|
PGH
|
PGH
|
|
Broccoli
|
PGH
|
PGH
|
GH
|
|
Brussels sprouts
|
GH
|
GH
|
GH
|
|
Cabbage
|
PGH
|
PGH
|
GH
|
|
Cantaloupe
|
|
|
|
|
Carrots
|
PGH
|
PGH
|
PGH
|
|
Cauliflower
|
PGH
|
GH
|
GH
|
|
Collards
|
PGH
|
PGH
|
PGH
|
|
Cucumber
|
|
|
|
|
Eggplant
|
|
|
|
|
Garlic
|
PGH
|
PGH
|
PGH
|
|
Kale
|
PGH
|
PGH
|
GH
|
|
Kohlrabi
|
PGH
|
PGH
|
PGH
|
|
Lettuce
|
PGH
|
PGH
|
PGH
|
|
Okra
|
|
|
|
|
Onions, bulbs
|
|
|
P
|
|
Onions, greens
|
PGH
|
PGH
|
PGH
|
|
Parsley
|
PGH
|
PGH
|
PGH
|
|
Peas
|
GH
|
GH
|
GH
|
|
Peppers
|
H
|
|
|
|
Radish
|
PGH
|
PGH
|
PGH
|
|
Spinach
|
PGH
|
PGH
|
PGH
|
|
Spinach, New Zealand
|
PGH
|
PGH
|
PGH
|
|
Squash, summer
|
|
|
P
|
|
Squash, winter
|
|
|
P
|
|
Swiss chard
|
PGH
|
PGH
|
PGH
|
|
Tomatoes
|
H
|
|
P
|
|
Turnips
|
PGH
|
PGH
|
PGH
|
|
Watermelon
|
|
|
|
Cool
Greenhouse Vegetable Schedule
The chart below applies to greenhouses that run winter night
temperatures below 45° F (7° C) and to solar greenhouses that are in a
climate that receives a winter monthly average of less than 45 percent of
possible sunshine as listed by your closest National Weather Service
office (see (see
Average PERCENT OF
SUNSHINE
for selected
locations
across the United States.).
M
o n t h s
|
Crop
|
Dec
|
Jan
|
Feb
|
|
|
|
|
|
|
Beans, bush
|
|
|
P
|
|
Beans, fava
|
GH
|
GH
|
GH
|
|
Beans, lima
|
|
|
|
|
Beans, pole
|
|
|
|
|
Beets
|
PGH
|
PGH
|
PGH
|
|
Broccoli
|
GH
|
GH
|
GH
|
|
Brussels sprouts
|
GH
|
GH
|
GH
|
|
Cabbage
|
GH
|
GH
|
GH
|
|
Cantaloupe
|
|
|
|
|
Carrots
|
GH
|
GH
|
PGH
|
|
Cauliflower
|
H
|
GH
|
GH
|
|
Celery
|
GH
|
GH
|
PGH
|
|
Collards
|
GH
|
GH
|
GH
|
|
Cucumber
|
|
|
|
|
Eggplant
|
|
|
|
|
Garlic
|
GH
|
GH
|
PGH
|
|
Kale
|
GH
|
GH
|
PGH
|
|
Kohlrabi
|
GH
|
GH
|
GH
|
|
Lettuce
|
GH
|
GH
|
PGH
|
|
Okra
|
|
|
|
|
Onions, bulbs
|
|
|
P
|
|
Onions, green
|
GH
|
GH
|
PGH
|
|
Parsley
|
GH
|
GH
|
PGH
|
|
Peas
|
GH
|
GH
|
PGH
|
|
Peppers
|
|
|
|
|
Radish
|
GH
|
GH
|
PGH
|
|
Spinach
|
GH
|
GH
|
PGH
|
|
Spinach, New Zealand
|
GH
|
GH
|
PGH
|
|
Squash, summer
|
|
|
|
|
Squash, winter
|
|
|
|
|
Swiss chard
|
GH
|
GH
|
PGH
|
|
Tomatoes
|
|
|
P
|
|
Turnips
|
GH
|
GH
|
PGH
|
|
Watermelon
|
|
|
|
End of schedule
All information on this web page is copyrighted by author, Shane Smith
©2000, 2012
. Reproduction in any form is prohibited without the author's
permission.
Please- do no
unauthorized copying, printing or electronic duplicating. Thanks
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