Answer: Chrysanthemum tanacetum is known as Dusty Miller, or Silver Lace, and Chrysanthemum parthenium is commonly known as Feverfew. If the plants had gray foliage, you're looking for Dusty Miller. If they had green foliage, you might want the Feverfew. Both have pom-pom type flowers - and both have yellow flowers, not white. The type of chrysanthemum with white pom-pom flowers would be Chrysantehmum morifolium, or florist's chrysanthemum. Seeds for all three plants are available through Thompson & Morgan, Inc., PO Box 1308, Jackson, NJ 085027-0308. Phone (800) 274-7333. Hope this information helps you find just the right plant!
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