Experiments Afoot

basil seedlings

The winter clean up continues as our thoughts turn to seeds.

lightexperiment

Which lighting?

LED 2 spectrum (red & blue) v Fluorescent

We’ve used fluorescent lights in the past, as they were easier to source in this country, but are quite expensive to run. 

Research shows that white light is not particularly the correct wavelength for plant growth. 

LED’s are cheaper to run but harder to find here. There are some really expensive ones, but we found some ‘cheaper’ imports.

Germination Results

Under Fluorescent – both basil and cilantro (coriander) sprouted

  • Basil leaves were larger and the plants seemed a little taller, the roots were clearly visible through the grow cube
  • Cilantro – again leaves and roots larger, but stems were straggly and pale
  • Leaves larger as seedlings were seeking out enough light to grow

Under LEDs – red / blue spectrum

  • Leaves on both plants were smaller but were darker green (richer in chlorophyl)
  • The cilantro stalks were stronger, a darker green and a little shorter
  • Failed germination at the corners of the seed tray – due to lack of light coverage or perhaps due to the quality of the LED lights. We’d like to do further experiments, on a small scale, of the far red & far blue spectrum, but germination season is almost here, so we’ll go with these panels this season.

We planted out the strongest looking seedlings into pots of earth and placed them on window sills through out the house.

Our first official full set of herbs and salad leaves are now in the propagator. We hope to have them growing on in the aeroponic tanks in a couple of weeks.

basil

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