Tropical-feeling nights stunt superfood salad growthpublished at 13:17 BST
Katie Martin
BBC Radio Solent

Tom Amery says watercress thrives in blazing heat and freezing conditions but tropical nights limit growth
I’ve been to Alresford in Hampshire, where watercress grows in free-flowing water.
Drayton Farm is situated on the clear, spring-fed chalk waters of the River Arle.
Farmer Tom Amery told me that the crop grows well in the blazing hot sun and the freezing cold winter, because the water is a constant 10C (50F) - but the tropical-feeling nights do limit the growth.
Watercress has been growing in Hampshire for centuries, but boom time came the expansion of the railways in the 1860s meant farms could get their crop to restaurants in London within hours.
Today, the Watercress Company produces 500,000 bags of watercress every week - a whole lot of vitamins for very few calories.





















