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transplanting plants into gro-dan grow media

How to transplant and root?

Start your seeds or cuttings in a Grodan starter (see the pink SEED brochure). Seedlings in Grodan can be transplanted into another Grodan product or any other growing media-such as water, peat mixes, Cococan ® Coco or even soil.

What size Gro-Block should I use?

Choose your block size like you would a plant container. Do you normally use a 4” pot? Then choose a 4” Gro-Block. If 6”, then use the Hugo.

Basic steps

  1. Wet your growing medium before transplanting. If using Grodan , condition according to steps in the blue SOAK brochure. To avoid shock to the seedling, soak the medium with the same level of plant food that you have been giving to the seedling (mid-strength).
  2. If seedling is in a 1.5” Grodan starter, you can easily plug it into the round hole of a Gro-Block. If the starter doesn’t fit, you can make the hole bigger and then transplant.
  3. If using a Mini-Block starter, remove the plastic wrapping; or alternatively, leave the wrapping on and simply place Mini-Block on top of the larger Gro-Block.
  4. You can also transplant into loose Grodan , such as Growcubes or granulate. Just fill a small well draining container with the loose Grodan .
  5. Your plant is now ready for fast root growth.

    transplanting into soil and othermedia

    • Soak the growing media well before transplanting, preferably with a plant food made for that media.

transplanting into systems

Some people opt for advanced techniques that make hydroponics more exciting. The two systems below are a great choice for short term crops with small root mass, such as herbs and lettuce.

Aeroponics

Method where nutrient solution is sprayed directly onto the plant’s roots.
  1. An air pump or compressor pushes the nutrients up the tubing.
  2. The nutrient solution is held in a reservoir tank.
  3. A timer regulates frequency and duration of nutrient delivery.
  4. A mister sprays the nutrients onto the plant’s roots.
  5. The seedling in your Grodan plug goes directly into the system, some times you may use a small net basket to hold plug.
  6. The nutrients are returned from the tray into the reservoir so it is a closed system with no waste.
  7. NFT(NutrientFilmTechnique) This method entails nutrients flowing over the roots inside a channel usually made of pvc pipes.
  8. A pump pushes nutrient solution up.
  9. The nutrient solution is held in a reservoir tank.
  10. The plants are held in a tray/tube.
  11. Grodan starter in net basket.
  12. The nutrient is continually flowing over the roots and then returning into the reservoir. So it is also a closed system with no waste.

NFT(Nutrient Film Technique)

This method entails nutrients flowing over the roots inside a channel usually made of pvc pipes.
  1. A pump pushes nutrient solution up.
  2. The nutrient solution is held in a reservoir tank.
  3. The plants are held in a tray/tube.
  4. Grodan starter in net basket.
  5. The nutrient is continually flowing over the roots and then returning into the resivoir

Ebb & Flow(also called Ebb & Flood)

For growing even larger plants, you can use this technique where a tray is flooded periodically with nutrient solution from a reservoir.
  1. Plant that is either in a container or in a Gro-Block. If in a container, make sure there is a good drain layer at the bottom of container, such as some expanded clay pellets.
  2. A tray that will allow flooding up to half of the block or container. (HINT: Make sure to keep tray clean and free of leaves and debris, this will reduce insect and disease infestations)
  3. A stock tank that holds the nutrients. It needs to be at least 4 times the size of the volume needed to completely soak your plants. With Ebb & Flow, you always need a larger tank size than with top irrigation because you are saturating 100% each time.
  4. A pump that will lift the nutrient solution to the tray and quickly flood it to half way up the growing media.
  5. A timer set for frequency of flooding. Keep cycle time at 10 minutes for each flooding-meaning a total of 10 min. to fill and empty the tray. (see SOAK brochure for tips on how often to water).
  6. Connect a 1/2” tubing to the pump up through a hole in the tray.
  7. Connect the tube to a fitting that will fill the tray with solution.
  8. There should also be an overflow fitting that sits above the fill fitting, about 1/2 way up to the plant container or block, so that at that point the solution drains back into the tank.
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