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Extending season

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Extending the Season …

Extending the Season
Fruit and Vegetable Science
K. Jerome

Published in: Education

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  • 1. Extending the Season
  • 2.
    • Start earlier in spring and enjoy fresh food sooner
    • Extend season
    • into fall
  • 3.
    • Season-stretching devices
    • Add four to six weeks to front end and back end of growing season
  • 4. Uses
    • Early spring planting
    • Harden off seedlings started indoors
    • Extend fall garden
  • 5.
    • Simple is best
    • Withstand strong winds
    • Shed rain and snow
    • Absorb and store solar warmth
  • 6. What plants to use
    • Cool season plants - lettuce, spinach, coles –
    • don’t need much heat at night
  • 7.
    • Simple plastic cloches, plastic-covered cold frames raise nighttime temperatures 4 to 5 degrees
  • 8.
    • insulating blanket - 8 to 10 degrees
    • Black water bottles – 12-15 degrees (release stored daytime warmth at night)
  • 9. Materials
    • Found or recycled materials
    • Purchased kits
  • 10. Cloches
    • Low, transparent individual plant protectors
  • 11. Cloches
    • for plants spaced more than 8 inches apart, such as tomatoes and peppers
  • 12. Cloches
    • plastic milk jugs or clear plastic bottles
  • 13.
    • set of three large cloches - £36 ($75.00)
    • set of three small cloches - £15 ($30.00)
  • 14. Cloches
    • Must be heavy
    • Must be able to stake to ground
  • 15. Cloches
    • Bamboo cloches
    • cover with plastic
    • or fabric
  • 16. Cloches
  • 17.  
  • 18.  
  • 19. Tunnels
    • Plastic-covered
    • (switch to remay in warmer weather)
    • Low tunnels stand firmer in wind
    • Must hold up under heavy snow loads - sturdy support
  • 20. Tunnels
    • Fence wire, concrete reinforcing wire
    • Simple metal hoops
    • Green saplings
    • Small diameter plastic pipe.
  • 21. Tunnels
    • 2-foot overhang on both sides
    • Edge-weights:
    • bricks
    • landscape timbers
    • firewood
  • 22. Tunnels
    • Ventilate –
    • purchase slitted plastic
    • open ends, hold open with clothespins
  • 23. Tunnels
    • Cover tunnels with old blankets or bedspreads on frigid nights
    • Won’t hurt plants to leave blankets on up to four days (storms)
  • 24.  
  • 25.  
  • 26. Other strategies
    • Wrap tomato cage with clear plastic
    • Staple bubble wrap over cardboard box
    • fold in top flaps for stability
    • fold out bottom flaps, weight with bricks
  • 27. Solar Water Bottles
    • Paint square milk jugs black, fill with water
    • Stack along inside of cold frame
    • Release warmth at night
  • 28. Cold Frames
  • 29. Cold frames
    • Permanent:
    • thermostat-controlled vent windows, heating units - like miniature greenhouse
  • 30.  
  • 31.  
  • 32.
    • Portable:
    • more flexibility
    • lightweight,
    • take into garden
  • 33. Portable frame
    • Place in garden seven to 10 days before planting date to warm
    • Plant crop directly into frame
    • Remove frame when weather stabilizes
  • 34. Make Your Own
    • Stack bricks or bales of straw, cover with a window
    • Build a box, cover with old storm window
    • Attach plastic window-well covers to hinged frame
  • 35.  
  • 36.
    • Increase temperature:
      • Locate near wall of heated building
      • insulate walls
      • Sink foundation in soil
      • double-glazed top
      • heating cable or manure
  • 37. Tips
    • Orient east to west for best sun
    • Make frame lower on south side – more sun
    • Paint inside white to reflect sunlight
  • 38.  
  • 39. Tips
    • Vent – don’t let temperature rise above 80
    • Automatic opener takes out guesswork
    • Check for air leaks
    • Irrigate with warm water
  • 40. Cold Frames
  • 41. Cold Frames
  • 42. Cold Frames
  • 43. Cold Frames
  • 44. Hot Bed
    • Adding heating coils or manure to warm
    • soil turns cold frame into hot bed and extends winter usefulness
  • 45. Mini-Greenhouses
  • 46.  
  • 47.  
  • 48.  
  • 49.  
  • 50. Wall-O-Water
    • Reusable
    • expensive comparatively
    • more effective than other materials
    • can add several weeks growth

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