Cucumber powdery mildew

As you make your seed purchases for the summer garden, remember that the first step in disease prevention is to obtain quality seeds of plants that are naturally resistant to disease.

For example, it is relatively easy to avoid cucumber powdery mildew, a disease that causes cucumber leaves to become covered with an apparent white powder (in fact, spore heads of the fungus that causes the disease) before blackening and dying, thus putting an end to that’s season’s harvest. You just have to pick a variety that is resistant to the disease and grow it under reasonable conditions.

Here is a partial list of cucumber varieties that are resistant to powdery mildew:

‘Marketmore 76’
  1. ‘Adam Gherkin’
  2. ‘Alibi’
  3. ‘Amiga’
  4. ‘Bodega’
  5. ‘Brittania’
  6. ‘Burpless Hybrid’
  7. ‘Carmen’
  8. ‘Cobra’
  9. ‘Corinto’
  10. ‘County Fair’
  11. ‘Cross Country’
  12. ‘Cutter’
  13. ‘Darlington’
  14. ‘Diamant’
  15. ‘Diomede’
  16. ‘Discover’
  17. ‘Diva’
  18. ‘Eclipse’
  19. ‘Eureka’
  20. ‘Excelsior’
  21. ‘Fancypak’
  22. ‘Fanfare’
  23. ‘Fountain’
  24. ‘Gardon’
  25. ‘Gateway Hybrid’
  26. ‘General Lee’
  27. ‘Gherking’
  28. ‘Goliath Hybrid’
  29. ‘Harmonie’
  30. ‘Homemade Pickles’
  31. ‘Intimidator’
  32. ‘Jackson Supreme’
  33. ‘Katrina’
  34. ‘Lisboa’
  35. ‘Little Leaf’
  36. ‘Manny’
  37. ‘Marketmore 76’
  38. ‘Marketmore 97’
  39. ‘Martini’
  40. ‘Max Pick’
  41. ‘McPick’
  42. ‘MIni Munch’
  43. ‘Olympian’
  44. ‘Patio Snacker’
  45. ‘Pepinex’
  46. ‘Perseus’
  47. ‘Picklebush’ (‘Pickle Bush’)
  48. ‘Regal’
  49. ‘Rockingham’
  50. ‘Salad Bush’
  51. ‘Saladin’
  52. ‘Salt and Pepper’
  53. ‘Slice Master Hybrid’
  54. ‘Slice More’
  55. ‘Socrates’
  56. ‘Stonewall’
  57. ‘Summer Dance’
  58. ‘Supremo’
  59. ‘SV4719CS’
  60. ‘Sweet Slice’
  61. ‘Sweet Success’
  62. ‘Talladega’
  63. ‘Tante Alice’
  64. ‘Tasty Green’
  65. ‘Tasty Jade’
  66. ‘Thunder’
  67. ‘Tyria’
  68. ‘Unistars’
  69. ‘Vertina’
  70. ‘Wautoma’
  71. ‘Zapata’

As you go through your seed catalogs, whether printed or on-line, look for the letters PM in the plant’s description: they mean the plant resistant to powdery milidew (PM).

Buy Disease-Resistant Starter Plants Too

‘Martini’ is a 2017 introduction that is powdery mildew resistant.

If you prefer to buy cucumber seedlings in late spring rather than start your own indoors from seed, you should still look for powdery mildew resistant varieties. In fact, it’s almost even more important, because powdery mildew often spreads in commercial greenhouses, meaning the young plants you bring home are already contaminated. If you buy a highly resistant variety, though, the diseases simply won’t develop.

Controlling Powdery Mildew

If powdery mildew does show up on your cucumbers, here are some suggestions to control it: Powdery Mildew on Squash and Cukes.20170223c

Larry Hodgson is one of Canada’s best-known garden communicators. He has notably been editor-in-chief of HousePlant Magazine, Fleurs, Plantes et Jardins, À Fleur de Pot and Houseplant Forum magazines and is currently the garden correspondent for Le Soleil and radio garden commentator for CKIA-FM Radio. He has written for many garden publications in both the United States and Canada, including Canadian Gardening, Harrowsmith, Horticulture, Fine Gardening and Organic Gardening. He also speaks frequently to horticultural groups throughout Canada and the U.S. His book credits include The Garden Lover’s Guide to Canada, Complete Guide to Houseplants, Making the Most of Shade, Perennials for Every Purpose, Annuals for Every Purpose, and Houseplants for Dummies, as well as nearly 60 other titles in English and French. He is a past president of the Garden Writers Association (now Garden Communicators International) and the winner of the prestigious 2006 Garden Media Promoter Award offered by the Perennial Plant Association. He resides in Quebec City, Quebec, Canada.

3 comments on “Powdery Mildew Resistant Cucumbers

  1. Roy Lewis

    What about mosaic virus resistance

  2. Pingback: 10 Tips for Growing the Best Cucumbers – Laidback Gardener

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