I am trying to grow a lemon tree from seed. I have been germinating the seeds for 8 days and the white root is starting to pop out of the seed. My question is how long to I wait to put them in the small ceramic pots? Can I plant them now or should I wait until they are a little bigger. I am using a plastic ziplock bag and moist paper towel to germinate. Also I am using potting soil for the pots, should I add fertilizer to the soil?
Thank you for your inquiry to Toronto Master Gardeners.
Once you can clearly see roots and shoots, it is time to transplant your seedlings into a 4 or 5 inch diameter pot. You do not necessarily need to use clay, as it tends to dry out rather quickly. Don’t add fertilizer; soilless mix for containers is already full of plant support. Once the roots take over this small pot, the fertilizer will have been exhausted. At that point you can go up another size and refresh the potting soil.
Be sure to provide your seedlings with plenty of water and indirect light (until they can tolerate the sun).
A clear and simple guide to growing lemons in a climate similar to ours is on the University of Vermont Extension, Department of Plant and Soil Science, website: https://pss.uvm.edu/ppp/articles/citrus.html
Congratulations on your growing success!