novicegrowernz's ultimate guide to transplanting seedlings for beginners

well today i transplanted my seedling into bigger containers so the roots could take off and shoot down. filled cups up with seed raising mix (slow release fertilizer free and gave them a drink with water (6.5 ph) they are growing amazing and must say special queen #1 from seedsman are really good (and there cheap as) and im impressed 25 pounds for 20 seeds cant go wrong. they have been put into my 88 litre propagation bin brought from the warehouse nz for $18 nzd so was a bargain. my t5 light that i use is a aqua one 24w x 2 fluro light system for aquariums and they work great well transplanting done and have including the pics of my setup for you enjoy and happy growing

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instructions of how i transplant below

Cannabis seedlings need to be treated delicately. Mind your marijuana like babies. If seedlings need support, prop them up with a toothpick or a cocktail stick and some soft gardening wire.

An 18-6 or 24/0 light schedule is considered the sweet spot by most growers. White light is preferred. The source of light should be CFL, MH, or LED. If you have a sunny windowsill, it can work in a pinch.

Roots grow in the dark. That’s why we advocate 18-6 or 20-4 over a nonstop 24-hour light cycle. High humidity, ideally around 70% RH, and temperatures in the 20–24°C range make for a perfect seedling habitat. A propagator, thermo-hygrometer, and a spray bottle of water are the tools to help you dial it in.

Stretchy or floppy seedling growth can be due to genetics. Often, it’s an indication the grow lamp is positioned too far away from the canopy. A cool white 250W CFL can comfortably hang 15cm above a dozen or more seedlings without scorching leaves.

WHEN DO I TRANSPLANT SEEDLINGS

The right time to transplant your seedlings is just before they outgrow their current container. With cubes, you can see roots poking out telling you it’s time to pot up. When you start with a cup or small pot, you are relying on above-ground cues. Typically, when the set or sets of true leaves of the seedling have spread out to cover the circumference of the container, it’s time. Also, vertical growth will be an obvious indicator.
Don’t wait too long to transplant. Root bound plants will take time to recover and may be permanently stunted. In general, it takes 7–10 days for a seedling to take root and outgrow small starter pots of 1l or less.

HOW DO I TRANSPLANT SEEDLINGS

Cubes are the easiest to work with. Either cut a hole to size in a bigger block, or burrow a hole into the medium with your fingers and insert for a snug fit. Potting up takes a little more finesse. First, don’t fill your large container all the way to the top. Leave room so you can water properly later. If you pack the pot all the way to the top, water will mostly run off and not reach the roots.
Next, make an impression in your large container with another small pot, or the one with the plant in it if you don’t have any others. Make this impression in the medium after you have watered it. This creates a perfect imprint for the transplant.

image a: cup filled with seed raising mix (USE THE MEDIUM YOU ARE COMFORTABLE WITH)
image b: hole pressed in seed raising mix for seedling to go into
image c: seedling in and hole filled in then lightly watered

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the cups that i use are 700ml plastic disposable cups that i get at the discount store for $4 for 30 and i use a soldering iron to make nice rounded drainage holes and i make 4 drainage holes and leaves you will nice clean holes to ensure perfect drainage

let me know what you guys and gals think of my guide and any improvements you would make add them to help the beginner growers
 
Last edited:

SpideyManDan

Well-Known Member
Nice. Just as advice, you could always add a little section for potential problems someone might have while raising their seedlings.
 
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