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.
Milk thistle (Silybum marianum), also called holy thistle and lady's thistle, is a common weed in California, but grows throughout the world in climate zones 5 through 9. The plant has purple to red flowers and can be up to 10 feet tall. Other parts of this wild plant, beside the seeds, are also edible.