I have noticed in my greenhouse, that many Sarras have Spider Webs
in their tubes. I read somewhere that the plants and the insects
benefit. Once the spider have had their meal, the body of the insect
drops down, and is digested by the plant.
I only remove them if the webs start to look unsightly such as when
one of the spiders gets a bit greedy and spins a web over the entire
plant!
Bye For Now,
Russell Elliott