Tarragon – Mexican

mexicantarragonApr 22, 2016 = Day 0.  Plants started from seed (Botanical Interests). Seeds sowed in 1.5-inch rockwool cube in 2-inch net-pot.  Moistened with dilute fertilizer solution (1.2 mL Dyna-Gro Liquid Grow, 0.8 mL pH Down per gallon of tap water).  Nutrient concentrations (in ppm):  N 22, P 29, K 16, Ca 6, Mg 1.6, S 0.2, Fe 0.3, Mn 0.2, B 0.1, Zn 0.2, Cu 0.2, Mo 0.003, Ni 0.0003, Co 0.005.  pH = 6.0.

Apr 25 = Day 3.  Plant germinated, placed directly under a fluorescent light (2 ft. T8 bulb, 17W, 6500k) for 16 hours per day.

 

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May 2 = Day 10

May 5 = Day 13.  Installed plant into 1.125-gallon bucket (Perpetuem).  Hydroponic solution composed of 1.125 gal (4.3 L) tap water, 17 mL 250x Masterblend 4-18-38, 17 mL 250x calcium nitrate, 17 mL 250x magnesium sulfate, 0.23 mL Dyna-Gro Pro-TeKt, 1.125 mL pH Down.  (This solution is equivalent to 1.125 gal water, 2.25 g Masterblend, 2.25 g calcium nitrate, 1.125 g magnesium sulfate).  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 = 6.0.

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May 13 = Day 21.  3 plants growing.

May 14 = Day 22.  Moved plant to indoor grow room, receiving 8 hours LED light per day.

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May 26 = Day 34

May 30 = Day 38.  Trimmed plants down to encourage branching.

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Jun 16 = Day 55

Jun 22 = Day 61.  Trimmed plants again to encourage more branching.

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Jul 6 = Day 75.  One plant has died.

Jul 9 = Day 78.  Another plant has died, so I went ahead and harvested the last plant.  Total fluid used = 3.5 cups (0.22 gallons).  Final pH = 4.5.  I’m not sure of why the pH had dropped so low.  The roots looked terrible, poorly developed and brown in color.

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