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Indoor Gardening Checklist

posted Dec 2, 2015, 7:28 AM by Cory Potter


  • Keep Environment Clean: Easier to work in and helps to prevent contaminating plants.

  • Temperature:  Day 70°-75°F, Night 55°-60°F is optimum for most plants

  • Humidity:  40%-60% is ideal for most growing.  Check walls and ceilings for molds or condensation.

  • Air Circulation and Ventilation: Proper circulation will prevent dead zones of bad and/or cold air at lower levels and hot layers of air near the ceiling.

  • Check top and underside of leaves for likely signs of disease, insects or nutrient deficiency.

  • Promptly remove and dispose of any dead, dying or diseased foliage in the growing area.  Conduct any necessary shaping, training, or stressing of branches and ensure foliage is properly supported (via string, netting or stakes).


  • Check Lights:  Maintain lamps 12-36 inches above plants!  Check timer is correctly programmed for the given phase of growth.  Check electrical connections/plugs.

  • Check for signs of leaf burn on foliage closest to the lamp.

  • Rotate or turn plants as needed to get uniform growth.  Ensure oscillating fans are covering all foliage, especially those closest to the lamp.  

  • Check for signs of insufficient light e.g. sparse, spindly, foliage.  Ensure foliage is not being unduly shaded by other plants.

Nutrient Solution:

  • Check/adjust EC. For recirculating systems, add top-up water as needed.  Use an EC meter to measure the strength/concentration of the nutrient solution to keep adequate concentration level.

  • Check pH: Ideal pH for most plants is between 5.5 and 6.5

  • Check nutrient temperature is between 18-21°C (64-70°F).

  • Check for plumbing leaks; pooling in trays/channels/pots.

  • Check drainage and/or feed outlets (drippers) are not being blocked by roots.

  • Check roots/medium at various points for signs of disease, rotting or molding materials, insects or over/under watering.

  • Check pumps and timers are working properly.  Ensure nutrient schedule appropriate for the current phase of growth.

  • Recirculating systems: Discard and replace old nutrient every 7-14 days.

  • Conduct optional foliar spraying and apply optional additives e.g. compost tea.

Keep a Growing Journal:  Note finding for each time you observe something.

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