• Alabama, AL
• Alaska, AK
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• District of Columbia, DC
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• Oklahoma, OK
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• South Dakota, SD
• Tennessee, TN
• Texas, TX
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• Washington, WA
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• Wisconsin, WI
• Wyoming, WY

• Alberta, AB
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• Manitoba, MB
• New Brunswick, NB
• Newfoundland, NL
• Northwest Territories, NT
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• 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

Orchid reproduction: An orchids seeds cannot germinate unless they are penetrated by fungus threads.

Best soil chemistry for roses: Roses seem to grow best in soil that has a chemical pH of about 6.5.