I have never grown Ponderosa lemons before. A guy brought over some lemons he grows in the ground here & said they were Ponderosa lemons. From all Ponderosa lemons I have seen, they are rounded on the bottom & have no nipple.
These have a nipple & from what I know, Ponderosa is not hardy at all. We can not grow most true lemons here in the ground. This one he said has been growing in his yard with no protection for over 10 years.
What is it?