Angela O’Callaghan, PhDSocial Horticulture Specialist    University of Nevada   Cooperative Extension
2/25/2013   2
Different definitions:• Area of amended soil slightly  higher than surroundings• Discrete structure containing  varied kin...
Can be made of                       brick, block, wood,                       plastic, etc.Can be built to   size, height...
• Plastic can     look like       almost    anything,    including         wood
• Control over plants’ environment:    –Fill, water, fertility management•   Varied bed height for convenience•   Few weed...
2/25/2013   11
2/25/2013   12
• Can be  temporary or    permanent• Must be filled    with fertile,  well-drained            mix    2/25/2013       13
May be:            •Unglazed clay (terra            cotta)            •Glazed clay            •Plastic            •Wood   ...
Wood                              Good drainage                              Rustic appearance                          ...
• How much $$ do you want to  spend?• How much space can you dedicate  to it• How convenient will it be• Who will build it
• http://www.cleanairgardening.com  /raised-bed-gardening.html
• Lumber ~ $1/linear foot  – Walls & uprights  – 2” x 10” x length of choice x height of    choice  – 4” x 4” x height of ...
• ~ $1 per• ~ 2” x 2” x 8”• Need ~ 420 bricks for  –10’ long x 4’ wide x 20” high• Mortar (2) ~ $20• Cost ≈ $440
•   Bed = 10’ long x 4’ wide x 18” high•   ~ $1.50/block (16” x 6” x 6”)•   ~ 68 blocks ~ $102•   Mortar 2 bags ~ $20•   ≈...
• Very wide price range• May mimic wood or block• Does not survive Nevada conditions
• Potting mix     • Peat moss, perlite,                    vermiculite, soluble                    fertilizer• “Planter mi...
• Potting mix   • Expensive, dries out quickly• “Planter mix” • Materials may not be fully                  composted, cou...
• A raised bed is a confined space• It makes sense to plant annuals (or  plants that we treat as annuals)
• We treat most of the vegetables  we grow as annuals, whether they  are or not• Many of our common vegetables  are not   ...
• Vegetables are often grown as annuals,  although they may technically be something  else       2/25/2013                ...
• Lettuce• Spinach (not New Zealand or Malabar spinach)• Chard
Usually only want thefirst years growth –leaves, roots, stalks;second year itflowers
Flowering broccoliFlowering carrots       2/25/2013                         32
•   Artichokes•   Jerusalem artichokes•   Sweet potatoes•   Tomatoes
2/25/2013   34
• Annuals will flower and produce seeds once  before dying• Biennials will flower and produce seeds once,  and only if the...
Express the gardener’s taste Sophisticated Rustic Urban Antique Eclectic2/25/2013                36
A pot is a miniature         garden plot As long as there is    sufficient room       for roots and    drainage, it can   ...
2/25/2013   38
2/25/2013   39
Such as condensed                    foam         • Can look like decorative clay without     the weight or cost• Can be t...
2/25/2013   41
• Insulation• Conserves water• Moderates heat      2/25/2013     42
Material    Problem• Brick     • Expensive, may need              mortar• Block     • May release salt            • Expens...
• From P. Allen Smith’s website
•Certain vegetables grow smaller if planted close together•This technique is best for leafy vegetables•Less for fruiting v...
• Most herbs are grown either for leaves  (basil, oregano, mint) or flowers (dill)• Many can grow as companion plants• May...
• Herbs can be              somewhat crowded              as long as there is              sufficient air              cir...
Even if you have a large         space                        Grow                  aggressive               plants in pot...
• Each plant removes available  nutrients that it needs• In a confined area like a raised bed  the soil or mix may become ...
• Native desert soils are generally infertile• Soils placed around construction are  generally worse• Gardeners need to in...
• Commercial all-  purpose fertilizers      have nitrogen,    phosphorus and           potassium• The % of each (in that o...
• In addition to NPK, several other  micronutrients may be present in  product.       2/25/2013                      53
2/25/2013   54
 If you want to grow       If you want what is organically, then          usually most conventional               conven...
Irrigation,               hose,               watering can2/25/2013                 56
2/25/2013   57
2/25/2013   58
•   Ongoing fresh crop of plants•   Some plants are only used fresh•   For instance, leafy greens•   For continual supply,...
2/25/2013   61
• How long from seed to mature  plant?• How long will a first crop last?• How much of a variety does the  gardener (and fa...
• Have salad green that takes 45 days from  seeding to maturity at 60 (early spring)  – Plant on February 1  – Plants matu...
• Want to have continuous salad• Need new crop by March 27• At 75 plants grow faster, say 42 days to  maturity• Count back...
• Plant earlier in spring• Grow later in fall• Grow longer despite seasonal  changes    2/25/2013                    65
•   Right plant, right place•   Properly fertilized•   Properly watered•   Receives enough light•   Sheltered from excess ...
•   Mulch•   Wall o’Water•   Floating row covers•   Cloches•   Shade cloth                          67        2/25/2013
• Straw• Pine needles
• Shredded      wood
Grow Your Own, Nevada! Spring 2012: Raised Bed Gardening
Grow Your Own, Nevada! Spring 2012: Raised Bed Gardening
Grow Your Own, Nevada! Spring 2012: Raised Bed Gardening
Grow Your Own, Nevada! Spring 2012: Raised Bed Gardening
Grow Your Own, Nevada! Spring 2012: Raised Bed Gardening
Grow Your Own, Nevada! Spring 2012: Raised Bed Gardening
Grow Your Own, Nevada! Spring 2012: Raised Bed Gardening
Grow Your Own, Nevada! Spring 2012: Raised Bed Gardening
Grow Your Own, Nevada! Spring 2012: Raised Bed Gardening
Grow Your Own, Nevada! Spring 2012: Raised Bed Gardening
Grow Your Own, Nevada! Spring 2012: Raised Bed Gardening
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Grow Your Own, Nevada! Spring 2012: Raised Bed Gardening

  1. 1. Angela O’Callaghan, PhDSocial Horticulture Specialist University of Nevada Cooperative Extension
  2. 2. 2/25/2013 2
  3. 3. Different definitions:• Area of amended soil slightly higher than surroundings• Discrete structure containing varied kinds of fill
  4. 4. Can be made of brick, block, wood, plastic, etc.Can be built to size, height and mobility needs of gardener 2/25/2013 5
  5. 5. • Plastic can look like almost anything, including wood
  6. 6. • Control over plants’ environment: –Fill, water, fertility management• Varied bed height for convenience• Few weed problems• Discrete size, easier to work• Smaller area to shade or protect from frost, when necessary
  7. 7. 2/25/2013 11
  8. 8. 2/25/2013 12
  9. 9. • Can be temporary or permanent• Must be filled with fertile, well-drained mix 2/25/2013 13
  10. 10. May be: •Unglazed clay (terra cotta) •Glazed clay •Plastic •Wood •Biodegradable material •Large •Small •Sitting2/25/2013 14
  11. 11. Wood  Good drainage  Rustic appearance  Can be expensivePlastic – Can look like almost any material Holds water well Low cost 2/25/2013 15
  12. 12. • How much $$ do you want to spend?• How much space can you dedicate to it• How convenient will it be• Who will build it
  13. 13. • http://www.cleanairgardening.com /raised-bed-gardening.html
  14. 14. • Lumber ~ $1/linear foot – Walls & uprights – 2” x 10” x length of choice x height of choice – 4” x 4” x height of choice – May need more uprights for long, tall bed• Hardware ~ $5 per upright• A 20” high, 10’ long, 4’ wide bed ≈ $125
  15. 15. • ~ $1 per• ~ 2” x 2” x 8”• Need ~ 420 bricks for –10’ long x 4’ wide x 20” high• Mortar (2) ~ $20• Cost ≈ $440
  16. 16. • Bed = 10’ long x 4’ wide x 18” high• ~ $1.50/block (16” x 6” x 6”)• ~ 68 blocks ~ $102• Mortar 2 bags ~ $20• ≈ $142
  17. 17. • Very wide price range• May mimic wood or block• Does not survive Nevada conditions
  18. 18. • Potting mix • Peat moss, perlite, vermiculite, soluble fertilizer• “Planter mix” • Chipped wood, composted manure • Field soil, peat moss,• Potting soil perlite • Varying amounts of• Other organic matter in a matrix
  19. 19. • Potting mix • Expensive, dries out quickly• “Planter mix” • Materials may not be fully composted, could burn roots• Potting soil • May contain seedling pathogens• Other • Varying problems, poor water holding, incomplete composting, fertility may be questionable
  20. 20. • A raised bed is a confined space• It makes sense to plant annuals (or plants that we treat as annuals)
  21. 21. • We treat most of the vegetables we grow as annuals, whether they are or not• Many of our common vegetables are not 2/25/2013 28
  22. 22. • Vegetables are often grown as annuals, although they may technically be something else 2/25/2013 29
  23. 23. • Lettuce• Spinach (not New Zealand or Malabar spinach)• Chard
  24. 24. Usually only want thefirst years growth –leaves, roots, stalks;second year itflowers
  25. 25. Flowering broccoliFlowering carrots 2/25/2013 32
  26. 26. • Artichokes• Jerusalem artichokes• Sweet potatoes• Tomatoes
  27. 27. 2/25/2013 34
  28. 28. • Annuals will flower and produce seeds once before dying• Biennials will flower and produce seeds once, and only if they have experienced a chilling period with short days• The desired part of many biennial vegetables is produced only in the first year• Perennials can produce for several years 35 2/25/2013
  29. 29. Express the gardener’s taste Sophisticated Rustic Urban Antique Eclectic2/25/2013 36
  30. 30. A pot is a miniature garden plot As long as there is sufficient room for roots and drainage, it can work 2/25/2013 37
  31. 31. 2/25/2013 38
  32. 32. 2/25/2013 39
  33. 33. Such as condensed foam • Can look like decorative clay without the weight or cost• Can be thicker-walled than plastic for better insulation 2/25/2013 40
  34. 34. 2/25/2013 41
  35. 35. • Insulation• Conserves water• Moderates heat 2/25/2013 42
  36. 36. Material Problem• Brick • Expensive, may need mortar• Block • May release salt • Expensive, may not• Wood withstand extreme weather • Expensive, will not• Plastic withstand extreme weather
  37. 37. • From P. Allen Smith’s website
  38. 38. •Certain vegetables grow smaller if planted close together•This technique is best for leafy vegetables•Less for fruiting vegetables 2/25/2013 46
  39. 39. • Most herbs are grown either for leaves (basil, oregano, mint) or flowers (dill)• Many can grow as companion plants• May be used as houseplants 2/25/2013 47
  40. 40. • Herbs can be somewhat crowded as long as there is sufficient air circulation2/25/2013 48
  41. 41. Even if you have a large space Grow aggressive plants in pots 2/25/2013 49
  42. 42. • Each plant removes available nutrients that it needs• In a confined area like a raised bed the soil or mix may become depleted• These need to be replaced
  43. 43. • Native desert soils are generally infertile• Soils placed around construction are generally worse• Gardeners need to increase fertility• Soluble fertilizers are commonly used – May be organic or conventional – Very convenient – Concentrated levels of nutrients (conventional) 2/25/2013 51
  44. 44. • Commercial all- purpose fertilizers have nitrogen, phosphorus and potassium• The % of each (in that order, always) is listed on the package 2/25/2013 52
  45. 45. • In addition to NPK, several other micronutrients may be present in product. 2/25/2013 53
  46. 46. 2/25/2013 54
  47. 47.  If you want to grow  If you want what is organically, then usually most conventional convenient, then fertilizers are a no-no organic methods might be too much of a bother 2/25/2013 55
  48. 48. Irrigation, hose, watering can2/25/2013 56
  49. 49. 2/25/2013 57
  50. 50. 2/25/2013 58
  51. 51. • Ongoing fresh crop of plants• Some plants are only used fresh• For instance, leafy greens• For continual supply, calculate: – time from planting to mature plant – amount that is planted at any one time – How long plant(s) will stay usable 2/25/2013 60
  52. 52. 2/25/2013 61
  53. 53. • How long from seed to mature plant?• How long will a first crop last?• How much of a variety does the gardener (and family) eat? 2/25/2013 62
  54. 54. • Have salad green that takes 45 days from seeding to maturity at 60 (early spring) – Plant on February 1 – Plants mature about March 18, but can begin eating on March 13 – If one planting yields 14 salad days, by March 27, first crop is finished. 63 2/25/2013
  55. 55. • Want to have continuous salad• Need new crop by March 27• At 75 plants grow faster, say 42 days to maturity• Count backwards six weeks from Mar 27• Begin planting by February 13 64 2/25/2013
  56. 56. • Plant earlier in spring• Grow later in fall• Grow longer despite seasonal changes 2/25/2013 65
  57. 57. • Right plant, right place• Properly fertilized• Properly watered• Receives enough light• Sheltered from excess light, wind, heat, cold 66 2/25/2013
  58. 58. • Mulch• Wall o’Water• Floating row covers• Cloches• Shade cloth 67 2/25/2013
  59. 59. • Straw• Pine needles
  60. 60. • Shredded wood
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