inexpensive & effective season extension; gardening guidebook for iowa
TRANSCRIPT
Inexpensive and Effective Season Extension
Practical Farmers of Iowa
Webinar – Dec 13, 2011
Rob Faux
Genuine Faux Farm
Genuine Faux Farm Lettuce…Tell You About Our Mission
Small Family Farm
Local Sales
CSA, Direct Sale,
Farmers’ Market
Education
Sustainable Agriculture
Organic Certification
Vegetables
Vegetable Plants
Poultry
Season Extension Goals
1. Avoid production lulls during the growing season.
2. Extend the ‘normal’ accepted range of production dates for any produce.
3. Extend the season forward and backward.
4. Extend specific crop production periods.
5. Avoid breaking the bank doing it.
Considerations
• How much are you willing to extend your season?
• What are you willing to invest into the effort?
• You cannot make up for lack of sunshine
• You can only do so much to mitigate weather conditions.
• The later/earlier in the season it is – the harder the work is
Extending into Fall/Winter
Fall/Winter Crops
Root Crops Radish, Turnip, Parsnip, Rutabaga, Beets, Carrots, Leeks
Greens/Brassicae Lettuce, Spinach, Collards, Arugula, Mustard, Pok Choi, Chinese Cabbage, Kale, Cabbage, Brussels Sprouts, Kohlrabi
Storage Crops Winter Squash, Potatoes, Dry Beans, Garlic, Onions and Root Crops
Variety Selection Example Lettuce
• Tighter core = less tolerant of freezing
• Pick head varieties first, then romaine
• Loose leaf last to pick
• Red varieties are ‘redder.’
• Oak Leaf varieties can handle most cold.
• Most growth completed in October
Amish Deer Tongue – tighter ‘core’ Grandpa Admires – loose leaf
Variety Type Notes
Bronze Arrowhead
Oakleaf Excellent all season. Redder in colder weather. Will hold under cover until Dec 15. Can overwinter.
Grandpa Admires
Loose Leaf
Good all season. Redder in cold. Begins to show some damage at base, but easily cut off. Dec 5 avg last date under cover.
Pablo Batavian If old enough to head, pick before too much freezing. If a loose head, Dec 5-10. Harder to time in the Fall (longer maturity date). Good for summer lettuce.
Crispmint Romaine Best if all mature heads out by Thanksgiving. Outer leaves break in freeze. Will overwinter if small. Other than a little edge burn, good in summer.
Forellenschus Romaine Not tight romaine heart, so handles cold a bit better. Leaves don’t bounce back as well from longer freeze. Fair, but not the best with warmer weather. Until Thanksgiving.
Red Salad Bowl
Loose Leaf
Best in cooler weather. Overwinters well. Could pick until Christmas. Taste is off if weather too warm.
Gold Rush Loose Leaf
Best in cooler weather. Overwinters fairly well. Similar growing condition notes to Red Salad Bowl.
Australian Yellow Leaf
Loose Leaf
Tends to burn if 30 deg F or lower. A good summer variety. Taste holds even if plants tower some.
Other Fall Crop Varieties
Radish – small radish by end Oct
- Misato Rose, Miyashage (Diakon), Black Spanish
Turnip – Purple Top White Globe, Red Round, White Egg
Beet – Detroit Dark Red
Carrot – St Valery’s, Bolero
Pok Choi – Black Summer
Kale – Red Russian, Lacinato
Collards – Champion
Spinach – Bloomsdale
Cabbage – Red Express, Copenhagen Market
Timing the Planting
• Seed Pok Choi in trays end of July (transplant 4 weeks later)
• Lettuce in trays throughout August (tranplant 2-3 weeks later)
• Turnip direct seed mid August, can try later.
• Fall radish – Aug 20-25 seems to optimal
• Arugula, mustard – early September
• Collards, kale – let Spring plants continue.
Mulching or Not?
Picture September 6, 2010
Mulch
• Don’t discount the solar collecting ability of bare soil
• Weeds aren’t (as much) a problem in Fall
• Mulched kale & cabbage was not marketable as late as unmulched.
• Mulch helped with cleaner crops, easier pick.
• Increased field storage of root crops slightly
Row Covers
More on Covers
Snow can do amazing things, the taller hoop was inserted to show normal height, the other was found in Spring after snow melt.
Extending into the Spring
Spring Crops
Other Crops Beets, Baby Carrots, Leeks, Onions, Peas, Radish, Garlic Scapes
Greens/Brassicae Lettuce, Spinach, Collards, Arugula, Mustard, Pok Choi, Kale, Kohlrabi, Chard, Broccoli
Perennial Crops Asparagus, Rhubarb, Walking Onions, various herbs and spices.
Overwintering Crops
• Lettuce started late and kept under cover • Spinach, cover if no snow • Chard, Kale can overwinter and produce early • Leeks and Onions
Success
Failures
• Most Brassicae (Broccoli, Cabbage, etc) • Arugula, Collards, Mustard • Lettuce over 2-3 inches in height. • Carrots – borer problems (mulch and no mulch)
Overwintered Crops
• Water in well before covering in Nov/Dec • Start watching plants in late Feb/early Mar • Avoid collapsed low tunnels/covers • Only check when temps above freezing • Wind is an issue – a good snow can be helpful • Watch for aphids – lettuce in particular
Crop Harvest
Spinach March-early May
Lettuce Mid-April-early May
Chard Mid-April – early June
Kale Mid-April – early June
Leeks May-June
Kick Starting Things in Spring • Transplant what you can vs direct seeding
• Select seed/varieties rated for cooler soil (e.g. dark green bean seeds vs light)
• Wait on the mulch (soil solar gain)
• Raised beds, row hills, hills
• Consider row covers
Pepper Mulch Trial 2009
Cold Frames
Seed Starting
Warm Season Crop Extension
Plant A Range of Cultivars Example: Sweet Peppers
Tier Cultivars Days To First Pick
To Peak Pick
I Ace 36 42
II Purple Beauty, Tolli Sweet 47 57
III King of the North 62
IV Napolean Sweet, Jimmy Nardello’s 59 70
V Garden Sunshine, Quadrato asti Giallo 71 78
VI Golden Treasure, Marconi Red 75 90
Transplanting
Try transplanting from trays to pots, then move them to the ground.
Advertised First Peak Top
Ace 50 36 42 63
Tolli Sweet 75-85 43 58 70
King of the North 70 62 62 74
• Pots reusable • Wider planting window • Able to ID “off” plants before putting in field • Effect is less for longer season peppers
Succession Planting Summer Squash example
2007 5081
2008 3679
2009 3840
2010 4120
PER FOOT FIELD
6.3 T1
4 SW 1
3.2 T2
2.7 T3/E5
per foot
Planting 1 Plant 2 Plant 3
2007 11.6 2.5
2008 4.7 6.6
2009 5.2 5.1 0
2010 4.7 5.4 3.0
per foot by planting
p1 July p1 Aug p1 Sep p2 July p2 Aug p2 Sep p3 Aug P3 Sep
2007 7.5 3.9 0.3 2 0.5
2008 0.9 3.6 0.1 2.4 4.2
2009 2.2 2 1 1.3 2.9 0.8 0
2010 0.6 3.9 0.3 2.9 2.4 1.2 1.7
More Warm Crop Thoughts
• If you have time, try to sneak in ‘late’ plantings
• Green Beans, Tomatoes and Eggplant in October (cover to prevent frost damage)
• Extended Cucumber harvest with timely irrigation
• Keep plants picked to extend harvest
• Heirloom vs Open-pollinated vs Hybrids
• Taste testing an important part of harvest
Q & A Thank you for joining us!