Peter, Paul & Mary song has been going round & round in my head for months now as I waited (I thought, in vain) for the green fruit on my dwarf Meyer lemon tree to ripen. The green fruit hung on all through the heatwave last summer that burned most of the leaves. More leaves grew but the fruit stayed green. I even thought I'd bought a mislabelled lime by mistake. However, some research revealed that lemons can take up to seven months to ripen so I just kept feeding the tree, humming my song & waiting. A few weeks ago, they began to ripen & now the tree is bowed down with gorgeous lemons.