Pots For Transplanting Seedlings Into Larger Containers

Pots For Transplanting Seedlings Into Larger Containers

Pots For Transplanting Seedlings. The majority of seedlings will require transplanting as they develop. Seedlings can grow into large, robust plants with the help of larger containers and a more robust mix with additional fertilizer. (Note that since fertilizer prevents some seeds from germinating, good seed starting mix doesn’t contain any added fertilizer.)

Repotting will aid in the development of stronger roots and shoots in your seedlings as long as there is ample light.

Pots For Transplanting Seedlings

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Size of a Seedling Pot

For the transition, a 3- or 4-inch plastic pot or larger cell packs are ideal. Use recycled tin cans, yogurt cups, or similar-sized containers if you want to reuse containers in a more environmentally friendly manner; make two to three drainage holes in the bottom of each one.

To make holes in plastic, use a paring knife or screwdriver. For tin, use a hammer and a thick nail (wear protective hand coverings when punching holes). Recycle flats from the garden center, line your pots in a baking pan, or use any low, watertight container as a bottom support.

Seedling Fertilizer and Potting Mix

Your preference and the type of garden you have will determine the potting mix you use. Choose Black Gold® Moisture Supreme Container Mix or Black Gold All Purpose Potting Mix if you prefer planting mix with added fertilizer.

Both products can be fed for up to six months. Use OMRI Listed Black Gold Natural & Organic Potting Soil if your plants are going into an organic garden. It is productive, aerated, and retains water well. Apply any top-notch, water-soluble organic fertilizer as it lacks a fertilizer boost.

So that there is space for water without overflowing, fill each pot or container with soil to between a quarter and a half inch below the rim.

Transplanting Seedlings

Your seedlings should be gently moved when being transplanted. To gently remove seedlings from the media without damaging their roots or upsetting the one after them, use an ice cream stick or a blunt butter knife. Remove it by the roots.

Always lift a seedling by its leaves rather than by its stems, which are simple to bend or crush, and support the roots with the palm of your hand. One seedling at a time, remove. Open a hole in the potting soil big enough to fit the root system comfortably using your finger or a dibble stick.

To encourage new roots to grow on the underground portion of the stem, tomatoes can be transplanted much deeper into the ground. This is unusual. Transplant the majority of other seedlings at the same depth.

Gently insert the roots into the hole while holding the seedling by the leaf, then top it off with more soil and gently press it down. Next, gently water your seedlings. Let them recover from transplantation for a week.

Seedling hardening off

Take the entire flat of seedlings outside onto a porch or another covered outdoor space with some sunlight on mild days to help them get used to the outdoor wind and light. “Hardening off” refers to the process of preparing tender indoor plants for the more challenging outdoor growing environments.

If they are full-sun plants, gradually move them into higher light over the course of a week or two. Leave them outside at night if the nights get warm to help them adjust. Just keep them away from curious animals and voracious wildlife.

Because of the nutrient-rich soil, growth will be accelerated, allowing your seedlings to receive a lot more direct sunlight. Just be cautious during the initial days to make sure they adjust to the exposure well without burning or wilting.

Containers for transferring seedlings into larger ones

Repotting seedlings is essential for ensuring that your garden produces robust plants. I’ll discuss the advantages and let you know when to pot up seedlings in this post. Additionally, I’ll demonstrate the ideal containers and soil to use, as well as walk you through the process of potting up seedlings.

It’s exciting to repot seedlings because it shows how much your plants have grown! Your garden will benefit from larger, healthier plants if you move them into larger pots.

This is not a necessary step for effective seedling care. Many seedlings can grow successfully in their original pots.

However, if they are kept pot-bound in those tiny seed cells for an extended period of time, it can stunt their growth and cause them to begin to suffer.

It’s crucial to become familiar with the warning signs so you can move seedlings to larger pots at the proper time.


The quick response is no. Not every seedling requires repotting. The process of potting up seedlings is optional and not necessary for all plants.

In actuality, seedlings should only be potted up when necessary. Never attempt to repot small or immature seedlings (seedlings with little growth or without true leaves, for example).

Some seedlings won’t mind at all if you leave the seed trays where they are until you transplant them outside. But if they are kept too long pot-bound in those tiny seed cells, others will suffer.

The likelihood that you will need to pot up the seed increases with its size. Repotting may not be necessary for seedlings that emerge from tiny seeds.

On the other hand, large seedlings will grow best if they are transferred into larger containers as they get older.

The advantages of repotted seedlings

Potting up seedlings has a lot of advantages and is a great way to make sure your seedlings develop into strong, wholesome plants.

When seedlings are potted, they have more room to develop and grow. A prolonged period of being pot-bound in those tiny trays can stunt the growth of seedlings.

When seedlings are ready to be planted in the garden, planting them in pots will also give them plenty of room to grow into small plants. They have a lot more success potential because of this!

Increased airflow will also help seedlings grow in their own pots, which reduces the likelihood of mold growth. Additionally, once they are removed from the seed trays, they won’t be competing with one another for light and fertilizer.


How then do you determine when to pot up seedlings? There are a few indicators to keep an eye out for so you can time the transfer of seedlings to larger pots perfectly.

When is the right time to pot up seedlings?

  • they have grown to be twice as tall as the height of the container they’re in
  • there are a lot of roots growing out of the bottom of the seed cells (i.e.: they’re pot-bound)
  • they’ve stopped growing larger, or their growth is stunted
  • the soil dries out so quickly that you have to water the trays daily (or more!)


You have options when it comes to the soil you should use to pot up seedlings. You can use any soil you have on hand; you don’t need to purchase any particular seedling potting soil.

If you have the ingredients on hand, you can make your own batch of soil or use leftover seed starting soil. Additionally, you could use common potting soil.

Just be cautious not to choose too much soil (and never use garden soil!). Repotting seedlings with a light soilless mix is ideal to allow for easy root development.

Additionally, avoid using any type of soil that contains fertilizer because it can hurt delicate seedlings.


There are a few considerations to make when selecting the best kind of container to use for potting up seedlings.

Select a container that is roughly twice the size of the seed cells (a 3–4′′ pot works well most of the time). Additionally, make sure the bottom of any plastic containers you use has drainage holes (or poke the holes yourself).

The two basic types of containers you could use to pot up seedlings are non-plantable and plantable pots, to put it very simply.


Typically, plastic is used to make these kinds of pots. While you can make some of them yourself from recycled materials, you can reuse others year after year. Here are a few illustrations:

  1. Reusable nursery pots made of plastic
  2. use plastic cups
  3. yogurt bottles
  4. portions of plastic water bottles’ bottoms
  5. You can find additional small plastic containers in your recycling bin.


Made of biodegradable materials, plantable pots can be planted directly in the garden. Here are a few illustrations of each:

  • Coconut coir pots
  • Used paper pots
  • bog pots
  • containers made of other organic materials (such as pots made of cow manure!
  • homemade newspaper pots


It’s time to get your seedlings ready for their big move once you’ve decided which ones need to be repotted. Water your seedlings a few hours prior to potting them up to make life easier for both you and them.

It will be simpler because a moist rootball will hold together better than a dry one. Maintaining proper hydration will also lessen the possibility of transplant shock in your seedlings.

Repotting seedlings into bigger containers is simple if you just follow these simple step-by-step directions…


For potting up seedlings, you don’t need a lot of supplies. In fact, you might already have a lot of these things lying around your home. This is what you’ll require:

  1. Seedlings\sPots
  2. spoon or trowel for potting soil
  3. a pot tray (optional)
  4. After-potting seedlings in a tray Plant tags or markers


Lay out a towel or a large bed sheet to catch any spills and make cleanup easier before you start repotting seedlings.

Step 1: Gather your belongings –

Before you begin, it’s best to have everything prepared.

I set up a production line when I have a lot of seedlings to pot up. I prepare each container by adding about an inch of potting soil before lining them up.

The second step is to take it slowly and gently when removing the seedlings from the seed cell.

Put your fingers on either side of the stem to begin, and then turn the seed cell over. One cell’s bottom should be squeezed until the seedling emerges.

Avoid pulling or grabbing the seedling by the stem when removing it. If you are having trouble, you can pop the seedlings out of the cell using a spoon, butter knife, or thin trowel.

Step 3: Straighten the seedling roots.

If the roots are tightly bound together or growing in a circular pattern, gently tease them apart to make them straight. Be careful not to cut any roots off during the process.

If a cell is home to multiple seedlings, gently tease the roots apart to separate them. It’s crucial to put each seedling into its own pot when planting.

If you don’t separate them, they’ll be too crowded and won’t have enough room to grow.

Step 4: Add dirt to the pot and plant the seedling there at the same depth at which it was growing in the seed cell (do not bury the stem).

With your fingers, gently compact the soil around the seedlings’ rootball as you continue to fill the pot.

Step 5: Add a plant tag. A plant tag will help you later identify your seedlings.

Add one to each pot. If you don’t have plant tags, you can use a marker or paint pen to label the sides of plantable pots.

Alternately, you can write on a piece of tape that you’ve placed on your plastic containers (I prefer to use painters tape because it’s simple to take off later).

Water the seedlings in step six.

Water each one of them gently. After you water them, it’s typical for the dirt to settle. Simply add a little more to top them off if that occurs.


There is a possibility that your seedlings will experience shock after being potted up. That implies that after being repotted, they might droop for a few days. If this occurs, don’t become alarmed! It’s frequent and repairable.

Simply place them under the lights, maintain a constant moisture level in the soil, and postpone fertilizing until they have recovered. In a few days, they ought to reappear and appear healthy once more.

A great way to guarantee that the seedlings you grow for your garden are robust and healthy is to repottise them. You’ll be able to identify which seedlings require potting up and when to transplant seedlings into larger pots once you become familiar with the warning signs to look out for.

QnA Pots For Transplanting Seedlings

What size pots to transfer seedlings?

Seedling Pot Size A 3- or 4-inch plastic pot or larger cell packs are ideal for the transition. If you want to reuse containers for a greener approach, use recycled tin cans, yogurt cups, or similar-sized containers; punch two to three holes in the bottom of each for drainage.

When should I transplant my seedlings into bigger pots?

After 6 to 8 weeks under the grow lights, many of the seedlings need to be repotted into larger containers to ensure continued healthy growth until it’s time to move them into the garden.

What should I transplant seedlings into?

How to Transplant Seedlings. Plant seedlings into prepared soil – that’s soil that has been enriched with well-rotted organic matter such as compost. Remove the seedlings from their plug trays or pots then lay them out onto the surface, ready to plant.

How many times can you transplant seedlings?

Transplanting into a container about 25 percent larger is ideal. Allow the seedlings to continue growing in this container or transplant them once more if necessary before putting them in the garden once all danger of frost is past.

How deep should seedlings be planted?

The rule of thumb is to plant seeds at a depth equal to two or three times their width. It is better to plant seeds too shallow than too deep. Some seeds, such as certain Lettuces or Snapdragon, need light to germinate and should not be covered at all.

How do I stop leggy seedlings?

There are four surefire ways to prevent your seedlings from becoming leggy and they all involve light manipulation. Provide direct light. Provide artificial light. Adjust supplemental light. Brush the seedlings gently with your hand or a ruler several times a day to strengthen the stems.

What is the best soil for seedlings?

Best Seed Starting Mixes: Guide & Recommendations Germinating Mix (Gardener’s Supply) Eco-co Coir Seedstarting Mix (Gardener’s Supply) Potting Mix (Miracle Gro) Garden Soil. Bar Harbor Blend Premium Potting Soil (Coast of Maine) Black Gold Seedling Mix (Sun Gro) CocoTek and Earthworm Castings.

How often should I water seedlings?

You want seedlings to be kept moist but not wet and never allowed to dry out completely. This most often translates to watering the soil for your seedlings at least once per day, if not more often. A spray bottle is a good way to water your seedlings and keep the soil moist without letting it get too wet.

What are the two methods of transplanting of seedlings?

Seedlings should be planted at 1.5 centimeters of depth. Manual transplanting is done either at random or in straight-rows. In the random method, seedlings are transplanted without a definite distance or space between plants. The straight-row method follows a uniform spacing between plants.

How do you transplant seedlings after germination?

Can you bury leggy seedlings?

Can you bury leggy seedlings deeper in the soil? Generally, yes, you can plant leggy seedlings deeper in the soil to help compensate for the extra-long stems! However, avoid the temptation to plant them deeper right away, when they’re still very young and tender.