Diva has a lot of advantages over other varieties of cucumber. First, it is parthenocarpic, meaning that fruit is produced even in the absence of pollination. Second, this variety is resistant to a number of diseases, including Powdery Mildew.
Jul 6, 2015 = Day 0. Plant started from seed (Park Seeds). Moistened with dilute fertilizer: Dyna-Gro Liquid Grow, diluted 1 mL (1/5 tsp) per gallon of tap water. Nutrient concentrations (in ppm): N 18, P 24, K 13, Ca 5, Mg 1, S 0.13, Fe 0.26, Mn 0.13, B 0.05, Zn 0.13, Cu 0.13, Mo 0.002, Ni 0.0003, Co 0.004. pH = 7.0.
Jul 10, 2015 = Day 4. Seeds germinated. Transferred to grow room, receiving 14 hours LED grow-light per day.
Jul 22, 2015 = Day 15. Plant installed in 32-gallon bucket. Hydroponic solution composed of 32 gal tap water, 64 g MasterBlend 4-18-38, 64 g calcium nitrate, 32 g magnesium sulfate, 6.4 mL Dyna-Gro Pro-TeKt, 25 mL pH Down. Nutrient concentrations (in ppm): N 103, P 95, K 202, Ca 100, Mg 29, S 34, Fe 2.1, Mn 1.1, B 1.1, Zn 0.3, Cu 0.3, Mo 0.05, Si 4. pH = 6.5. Plant is getting about 4-5 hours of direct sunlight each day.
Sep 28, 2015 = Day 84. Began harvesting cucumbers.
Oct 1, 2015 = Day 87. Major infestation of inchworms. The cucumbers are unaffected, but the leaves look terrible, lot of holes in them. Removed inchworms by hand daily. This was a lot of work, next year I will probably just spray the whole plant with an organic pesticide, like Bt.
Continued to harvest cucumbers until mid-Nov. Fresh hydroponic fluid was added several times when the bucket felt light. Nights started getting cold, and plant was discarded in mid-Nov.
Total harvest = 24 cucumbers. Total water used = 45 gallons.