On Feb 4, 2013, chuey from San Antonio, TX (Zone 9a) wrote:
Painted daisy perennials, Tanacetum coccineum or Pyrethrum roseum, repel many bad bugs and browsing animals that are prone to munching on plants. Pyrethrum is a natural material made from the painted daisy (Chrysanthemum cinerariaefolium or Chrysanthemum coccineum). Pyrethrins are the six compounds in pyrethrum that have insecticidal power
Growing painted daisies in the garden can deter pests from surrounding plants. Pests and the painted daisy plant don’t normally exist in the same area, although young plants may occasionally be bothered by aphids or leaf miners A soapy spray or neem oil will get rid of these insects.
On May 2, 2005, ladyannne from Merced, CA (Zone 9a) wrote:
Plant this in the "bug-away section", with tansy and the like, for bugs dont like it at all. Planted near vegies or flowers, it can discourage pollination. If I wipe my dogs down with a leaf, the fleas stay away. Boiled leaves make intensely toxic bug spray to be used with extreme caution. Hardy little plant as long as it is given room and lots of sun.
This plant has been said to grow in the following regions:
Blytheville, Arkansas Littlerock, California Merced, California Redondo Beach, California Aliquippa, Pennsylvania Lancaster, Pennsylvania Austin, Texas Bryan, Texas Leesburg, Virginia Cheyenne, Wyoming