the other thing you can do is use old cola bottles etc, to make a humidifying replicate cover plant, which wont attract bugs of course, but is cheap as hell and can be used to create humid areas next to our plants to relive water stress.
If you cut the top from a 2L bottle, dig a hole in the soil next to your plant, say 1ft or at the edges of the canopy. Put the 2L cut base in the hole and fill with water, now cut the bottom from a 5L bottle, keep the lid on it. Place this over the top of the other, securing it with tent pegs or stones, this just so it doesnt blow away. As the sun rises, the bigger bottle begins to form water droplets, these run down the side and soak in to the soil, making the area around it damp. It lasts quite a few days, weeks even depending on conditions, but just top the water up to keep it working as needed. its a cool very cheap way to mimic cover crops :-)