‘Water droplets on leaves act as a lens in sunshine and scorch the leaves’
Harry next door fell about laughing at this. He has spent 25 years in Africa and has seen tropical sunshine follow rain. He has never seen foliage sun scorched afterwards. The physics and maths of it are quite impossible and the theory goes firmly in the bin.
my tomatoes in full sunshine.
The plants love it and the
force of the spray aids pollination.
Behind many garden myths there IS some truth.
It will be wrong to wet my tomato leaves in a few weeks time! As the days shorten, dampness and grey mould disease threatens.
Some plants, such as African violets, are notoriously liable to ‘water scorch’ when the foliage is wet. This is often worse in damp places where there is no direct sunshine.
Pesticide sprays in full sunshine become concentrated by evaporation and can also sometimes scorch.
Completely dry pot plants desiccate and die when left in strong sunshine for too long.
Years ago, a world famous alpine gardener spoke to 100 students at Askham Bryan College. He started with, ‘Do you know, water droplets act as a lens…’ A very timid young lecturer slid down in his seat. My students, bless them, never said a word!
No need here to wet the foliage, but there is no harm if you do.