• Alabama, AL
• Alaska, AK
• Arizona, AZ
• Arkansas, AR
• California, CA
• Colorado, CO
• Connecticut, CT
• Delaware, DE
• District of Columbia, DC
• Florida, FL
• Georgia, GA
• Hawaii, HI
• Idaho, ID
• Illinois, IL
• Indiana, IN
• Iowa, IA
• Kansas, KS
• Kentucky, KY
• Louisiana, LA
• Maine, ME
• Maryland, MD
• Massachusetts, MA
• Michigan, MI
• Minnesota, MN
• Mississippi, MS
• Missouri, MO
• Montana, MT
• Nebraska, NE
• Nevada, NV
• New Hampshire, NH
• New Jersey, NJ
• New Mexico, NM
• New York, NY
• North Carolina, NC
• North Dakota, ND
• Ohio, OH
• Oklahoma, OK
• Oregon, OR
• Pennsylvania, PA
• Rhode Island, RI
• South Carolina, SC
• South Dakota, SD
• Tennessee, TN
• Texas, TX
• Utah, UT
• Vermont, VT
• Virginia, VA
• Washington, WA
• West Virginia, WV
• Wisconsin, WI
• Wyoming, WY

• Alberta, AB
• British Columbia, BC
• Manitoba, MB
• New Brunswick, NB
• Newfoundland, NL
• Northwest Territories, NT
• Nova Scotia, NS
• Ontario, ON
• Prince Edward Island, PE
• Quebec, QC
• Saskatchewa, SK
• Yukon Territory, YT

• American Samoa, AS
• Armed Forces - Americas, AA
• Armed Forces - Europe, AE
• Armed Forces - Pacific, AP
• Federated States of Micronesia, FM
• Guam, GU
• Marshall Islands, MH
• Northern Mariana Islands, MP
• Palau, PW
• Puerto Rico, PR
• Virgin Islands, VI

Orchids are popular: The orchid is the most popular houseplant probably because it is more easily available than in the past and it is very easy to care for.

Noble flowers: The four noble plants of the ancient Chinese were the Chrysanthemum, the Orchid, the bamboo, and the plum, and therefore only the upper class Chinese were permitted to grow them in their gardens.