The Ponderosa lemon, sometimes called the American Wonder, is actually a hybrid of a citron and pomelo, which are two of the original citrus species. As such, the Ponderosa lemon rind is thick like a citron and the fruit are large like a pomelo. The juice is more acidic than your typical lemon. While I like those gosh darn big lemons, I have to admit that the foliage is probably the most drab in my collection. But hey, citrus foliage sets a pretty high bar in terms of attractiveness, so it’s not like it’s ugly to look at.
There will be a point when a young tree has a few fruits on it a couple months after blooming. Out of these few fruit, you’ll notice that a couple will really take off and eventually the growth on some will outpace the others. The laggards should be removed once identified. The tree will naturally drop them, but by pruning them sooner you shore up resources that can go into making the good fruit better or for new foliage.