Shopping for a water softener: 1  Salt-based units need to have the salt replenished on a regular basis, usually at a cost of anywhere from $2-$15 a month depending on the cost of the salt ($3-$8 per 40-pound bag) and the amount of salt used by your system.
Milkweed is the common name for perennial, herbaceous plants of genus Asclepias, family Asclepiadaceae (from Greek physician Asclepius). One hundred species occur worldwide; 13 are native to Canada.
Swamp Milkweed is an excellent plant to attract Monarch butterflies....and Monarch Butterfly caterpillars find it very tasty! This perennial plant is: The scientific name for this milkweed is Asclepias incarnata. It blooms from June to August and thrives in sun to partial sun.