When to Plant In Colorado  E-mail
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Written by University of Colorado Coop Extension   

When to Plant Garden Vegetables in Colorado

The chart below is taken from the University of Colorado's Cooperative Extension website.  For more gardening tips and details specific to gardening in Colorado  please visit the original article at http://cmg.colostate.edu/gardennotes/720.pdf

 

Vegetablegermination temperature1---------------------- min. optimum max.plant spacing2planting depthdays to germinationtypical age ofdays to transplant harvest(weeks)
Cool Season Crops3
BeetsBroccoli4Cabbage4 40o 40o40o 80 o 80 o80 o 90 o 90 o90 o 4-6” 18” 18” ¾-1” ½” ½” 7-10 3-10 3-10 60 65T485T4 5-7 5-7
Carrots Cauliflower4Kohlrabi
http://cmg.colostate.edu/gardennotes/720.pdfXX">
 40o40o40o 80 o 80 o80 o 90 o 90 o90 o 2-3” 18” 7-9” ¼” ½” ½” 10-17 3-10 3-10 70 65T450 5-7
LeeksLettuce (leaf types) Onion, green 40o35o35o 80 o 70 o80 o 90 o 70 o90 o 4-6” 7-9” 2-3” ¼” ¼” ¼” 7-12 4-10 7-12 120 60 60
Onions, dry (seed) (sets) Parsnips 35o35o 80 o 70 o 90 o 90 o 4-6” 4-6” 5-6” ¼” 1-2” ½” 7-12 15-25 11070
PeasPotatoes Radish 40o45o40o 70 o 80 o 80 o 90 o 4-6” or 3” x 8” 12-15” 2-3/2” 1” 4-6” ½” 6-15 3-10 65 125 30
Spinach Swiss Chard Turnips 40o40o40o 70 o 85o80 o 70 o 95o100 o 4-6” 7-9” 4-6” ½” 1” ½” 6-14 7-10 3-10 40 60 50
Warm Season Crops
Beans, snap Cantaloupe5Corn 55 o 60 o50o 80 o 90 o80 o 90 o 100 o100 o 6” or 4” x 12” 36-48” 12” x 30” 9” x 36” 1-1½” 1-1½” 1-1½” 6-14 3-12 5-10 60 85 60-90 2-35
CucumbersEggplantPepper 60 o 60o60o 90 o 80o80 o 100 o 90o90 o 6” trellised24-36” untrellised 18-24” 15-18” 1” 6-10 7-14 10-20 55 60T670T6 2-35 6-9 6-8
Tomato Squash, Summer Squash, Winter Watermelons 50 o60 o60o60 o 80 o 90 o90 o 90 o 100 o 100o 100 o110 o trellised: 24” between plants 36-48” 36-48” 36-48” 1-1½” 1-1½” 1-1½” 6-14 3-12 6-10 3-12 65T650 100 85 5-7 2-352-35 2-35
 
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