I'd personally wait til spring to pot them up. pretty certain that if you look around in garden centres, you can buy citrus compost.

Whilst fab to grow, they will probably not flower and fruit for many years and if they do, the outcome is very unpredictable.

Good luck

Hi Jvt again have you got a nice sunny windowsill , I'm growing some Plumerias in a windowsill as I've only got a cold greenhouse . I would expect you could pot them up at anytime as long as you have heating, not sure about what compost you'll need, Roy.

Hi, I would get them out pf that pot a s a p, looking at the size of them I would probably go for a 5" pot for each of them, but make sure that the compost is level with the lip on the pot, where it gets slightly wider about 1" from the top of the pot, this is to allow for watering, make sure that the top of the rootball is also at this level, having plants half way down the pot tends to make them go leggy, as they search for light, use john innes no 2, and keep them in a bright position, but not in strong sunlight, they need a minimum winter temperature of 37 - 41 deg f and water sparingly until growth starts again in spring, Derek.

I grow lots of citrus plants from seed, mainly lemon and orange to use as a root stock for grafting onto. I have about 100 seedlings of Seville orange that I planted early in the year and probably 30 Lemon. They are all in my greenhouse and intend to move them into my conservatory at the weekend.

My advise is to divide your two plants into separate pots now. As Derek said, use a John Innes no 2 or possibly 3 for best growing conditions. As you don't have a conservatory, then I would keep them on a sunny windowsill. The problem with this is that modern houses with central heating creates a dry environment and this could cause citrus plants to shed their leaves due to lack of humidity. To overcome this you could stand the pots on oversized saucers filled with stones and add water to the saucers to create more humidity. Also, lightly mist the leaves now and then.

Another thing to be aware of is that Citrus tend to need more micronutrients such as iron, manganese, and zinc which could be lacking in a balanced N-P-K fertilizer, so if you can get it, buy a feed specifically designed for Citrus plants. They usually sell two types, one for summer and one for winter. The summer feed contains more Nitrogen needed for active leaf growth.

The lemon that you grew from a pip probably won't come true and might never fruit. But if it's cared for I'm sure it will make a very nice center piece plant for your garden in the summer and your house in the winter. You never know, it could fruit and you could even discover a new variety :o)

Many thanks for taking the time to answer.

The information you have provided Myron is wonderful, thank you
I'm not worried about whether they produce fruit although it would be a bonus if they did.
Since bringing them indoors last week they appear incredibly healthy considering I never thought they would grow in the first place, it was a bit of an experiment to be honest.

Thanks to you all again,

John