SOIL FOR THE PLANTER BOXES:
three-quarters composting soil
one-quarter dirt from your yard
Don’t use an excessive amount of fertilizer in the planter boxes.
Too much fertilizer attracts ants.
Ants, at the very least, irritate the caterpillars.
WHICH MILKWEED IS BEST:
Some literature says that using the milkweed ‘cassaivea’ is not good because it carries a virus.
These sources say that it is best to use native California milkweed
BEWARE OF MILKWEED SEEDS:
Usually, these seeds have been treated with insecticide, so the plant that these seeds produce will kill caterpillars.