Nike has good advice here

What I would do is poke a lot of holes in those bags and let the leaves get us to the A.C air in your home. I would make sure to keep them out of full sun as the leaves get use to drier air...

In the best situation. I would stick them outside under shade as stated above. Your air is humid and you will have no need for a fan or baggie at all)

Fertilizer...NOT with Fish Emulsion since it will not provide ALL the nutrients that plant needs, not the right ratio, and not like in the ground. What ever nutrients the F.E has they won't be available right away nor will it cause further growth or greener color.

Do you have access to Foliage Pro? If not, then a good Miracle Grow?

Anything water soluble in the right ratio available right away...

P.s...My mother wants to know why you won't just stick them outside and plant them since you live there? You could get massive growth and they would get use to their environment quickly...You would have to protect them from your sun with some sort of covering for a while or shade cloth.

Mike

I'm a Debbie downer, so here we go.

your suffocating the trees with the bags. Trees from seed take longer to fruit. If your uncle was telling the truth then awesome. But in your area you might get tree decline due to hlb before it even flowers.

i want to move to Texas. Hlb is there or will be soon. I would never consider growing "outside" because of it. I don't know your budget but consider building a screenhouse. Even if it has to be a multi year project. Frame now, screen next year, that kind of thing. But dwarfs would be easier to contain inside those.

I'm growing lemon and lime plants from seed. Like you I live in a building with really no outdoor access. I agree with everyone that you need to remove the plastic bag. I only used a plastic bag to germinate the seeds before planting the seedlings into plastic cups with potting soil. After they outgrew the cups, I moved them into pots. They are still alive and doing well on a sunny windowsill. On warmer days I keep the windows open for circulation. If lack of air circulation is an issue, try a small fan (and mist the plants for humidity).

@miscel Thanks for your advice. Upon everyone's suggestion, took the baggie's off this morning. The orange and lemon sprouts are going fine - I am still concerned about the grapefruit trees. They're still pretty unhappy. I'll keep everyone posted.

Another thing is that I'm grow all of my food-bearing plants, like these citrus, completely organic. Tha'ts why I thought about the fish fert. However, if that's not acceptable for them at this stage, A: the soil it's in has 3-month's supply of fertilizer and B: i have the espoma citrus tone. Anything natural or what ratio should i be using? Make my own compost (sounds like a mess, but I'm down with trying it)?

After they've stabilized to the general environment for a week or so, I'd pot each seedling into its own container. If you wait longer, their roots will be a serious tangle.

Definitely use the citrus tone when your plants get bigger. I haven't used any fertilizers yet, but I know I will eventually when I switch to a 511 or a gritty mix. Presently, I'm using about 50% potting soil and 50% perlite. Besides watering, I've been giving my plants epsom salt (1 tbsp to 1/2 gallon) and a little vinegar. Not every feeding but every so often. Also, I have added a little bit of vermicompost.

If you're interested in composting, try vermicomposting. I vermicompost which I encourage others with limited space or no outdoor space to consider. It doesn't smell (unless you're doing it incorrectly); it takes up little space; and it's not hard at all to maintain a worm bin.

I'm trying to get a handle on this. You said you'd only grow these in pots, right? But do you want nice foliage plants? Or do you want something that will actually bear fruit?

If the latter, I hope you have really, really large pots and a lot of time, because grapefruits can take up to 10 years or more to bear fruit (from seedlings) and in a pot, that plant will likely need to grow upwards of 14 feet before it will bloom.

For patio plants that actually bear, I would purchase plants that have been grafted with a known variety

OR,

have a professional graft the scion stock from your grandmother's plants onto a rootstock. This way, you will have bearing plants in only a few years AND be able to keep those wonderful varieties of your grandmother's.

Jessica, make sure your babies get at least 8 hours of direct sun. I know that you prefer the organic route, but from what I have read on this forum, citrus growing in pots do better with non-organic fertilizers that contain all of the micronutrients required by citrus. I, and many others on this forum, use Foliage-Pro 9-3-6 fertilizer every time we water.

Citrus don't like to have moist soil all the time, they prefer well drained and on the sandy side. Plastic keeps in too much moisture and keeps out air. I would put them in the ground or in clay pots with a blend of cactus mix and potting soil. They like acid soil as well, so when you have them looking better make sure to give them a citrus fertilizer.