Growing indoors is possible but not especially easy, if you could put the pot outside in the sun you would get better results. Inside needs lots of light to grow properly, special lights close up or at least literally right next to a South window. Will usually grow better outside in the Sun and wind, inside you tend to get soft floppy plants.

You can transplant anytime, you could fit two in there. Buying one Bonnie plant for $5-6 is not cheap. The soil is okay though it is not specifically potting soil. Make sure to keep the soil from being soaked, because the soil dries out slow indoors.

Could I split my one plant into two or three to put in this planter?

What is the difference between potting soil and the one linked above? I could definitely get potting soil is that would be better.

I think I see two big plants in the cup, you could separate them carefully by the roots. They can get stressed out, but can recover in a couple days.

As for the soil, I'm guessing the Schultz soil has wood chips instead of the perlite (the lightweight white balls you see in the cup), and may not dry out as fast in a pot.

Ah! I see. Yes you are correct, this has wood chips. So, for lettuce I want something that dries out faster in the pot?

• That is a single plant. It can't be divided.
• The intended container is far too large for a single plant. Find something smaller or buy more lettuce starts.
• You want potting soil intended for containers, not anything labeled "all-purpose garden soil"
• Is there a reason you want to do this indoors? Growing food crops inside, especially as we start into summer, is not the greatest idea and they are far harder to manage inside on a counter or windowsill than they would be in the ground.

The wood chip soil is not ideal and may even smell.

I think I see in the cup one plant leaning left and one leaning right. Check and be careful. I've seen those Bonnie at stores and they usually have multiple lettuce plants in the cup, sometimes an absurd number of plants growing together.

" they usually have multiple lettuce plants in the cup, sometimes an absurd number of plants growing together. "

That has not been my experience with Bonnie plants, which I might add are grossly overpriced for what you get. I prefer to get my veggie starts from a local grower for half the price.

Whoever services the Bonnie plants in my area doesn't thin out or care if there is 3 to 10 lettuce plants growing in the absurd $5.49- $5.99 cups. Yes, not a good example of a garden seller, I guess you get more for the money.

FWIW, lettuce is dead easy to start from seed - and a packet of seeds usually costs less than 1 seedling too. I direct sow mine into Earthbox planters - they're perfect for greens like that. I like to use lettuce mixes, and they can grow rather densely too, for harvests of 'baby lettuce'.

Lettuce is a plant that can do well with some shade. Where I'm located, it already needs shade this time of year, the sun is so intense.

It does appear that there may be 2 plants in the pot, but separating might be dicey, as they're pretty large already. If they won't come apart easily, I'd use a small knife to cut down between the seedlings. - also water well before separating and after transplanting.

I'd plant lettuce seed into that planter. The plant/s in your pic may give you a couple of salads at best or enough leaves for a few sandwiches.