National Cactus Day in USA
National Cactus Day in USA is held on May 10. This event in the first decade of the month May is annual. 
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Happy National Cactus Day from the land of the cacti!
The cactus is the only plant with areoles—those small, fuzzy bumps on the exterior—from which flowers, spines, and branches spout. Each areole produces only one flower in its lifetime!
Cacti can live for decades as houseplants, and hundreds of years in the wild, and they grow at an excruciatingly slow rate. It takes 10 years for the massive saguaro cacti to reach one inch tall, according to the National Park Service, and they won't reach their full height of 45 or more feet for 200 years. There are about 20 genera with some 1200 species and many hybrids found in the world.
Cactus spines are not thorns, they are highly modified leaves. Cacti are Musical. At least their spines. The largest specimens were previously used as gramophone needles.
Similar holidays and events, festivals and interesting facts
National Foodies Day and Moscato Day in USA on May 9
National Animal Disaster Preparedness Day in US on May 9 (Held on the second Saturday of May);
Golden Spike Day on May 10 (The golden spike also known as The Last Spike is the ceremonial final spike driven by Leland Stanford to join the rails of the First Transcontinental Railroad across the United States connecting the Central Pacific and Union Pacific railroads on May 10, 1869, at Promontory Summit, Utah Territory);
Mother’s Day on May 10 (Anguilla, Antigua and Barbuda, Aruba, Australia, Austria, Bahamas, Bangladesh, Barbados, Belgium, Belize, Bermuda, Bhutan, Bonaire, Botswana, Brazil, Brunei, Canada, Cambodia, Cayman Islands, Central African Republic, Chad, Chile, China, Colombia, Congo, Dem. Rep., Congo, Rep., Cote d'Ivoire, Croatia, Cuba, Curaçao, Cyprus, Czech Republic, Denmark, Dominica, Ecuador, Equatorial Guinea, Estonia, Ethiopia, Faroe Islands, Fiji, Finland, Germany, Gabon, Gambia, Greenland, Ghana, Greece, Grenada, Guyana, Honduras, Hong Kong, Iceland, India, Italy, Jamaica, Japan, Kenya, Latvia, Liberia, Liechtenstein, Macau, Malaysia, Malta, Myanmar, Namibia, Netherlands, New Zealand, Pakistan, Papua New Guinea, Peru, Philippines, Puerto Rico, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Samoa, Singapore, Sint Maarten, Slovakia, South Africa, Sri Lanka, Suriname, Switzerland, Taiwan, Tanzania, Tonga, Trinidad and Tobago, Turkey, Uganda, Ukraine, United States, Uruguay, Vietnam, Venezuela, Zambia, Zimbabwe);
National Shrimp Day and National Liver and Onions Day in USA on May 10
National Ice Cream Cake Day in USA on May 10
Minnesota Statehood Day on May 11
National “Eat What You Want” Day in USA on May 11
Train Day on May 11
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