The length of time that cacti flowers last depends on the species, temperature, and watering of the plant. Some species start to bloom in spring, others in summer, and some need a period of dormancy to prepare for flowering. Learn more about the factors that affect cacti flower duration and how to create the perfect blooming environment for your plants. Many plants in flower have hundreds of buds ready to open at any given time, making their show of flowers last over several months. Just as each of the holiday cactus plants have slightly different leaf shapes, the flower shape also varies. Thanksgiving cactus has asymmetrical flowers, Easter cactus has starburst shaped flowers. The cactus is a desert plant and can be found in the arid regions of the world. The cactus blooms in the spring and the flowers are large and beautiful. The cactus is a hardy plant and can survive in the harshest of conditions. How Long Do Cactus Flowers Last. Plants with long, broad stems tend to last longer than plants with shorter stems. 5 days ago · How Long Do Cactus Flowers Last? Some cacti flowers can last for several days before wilting. But some types of cacti have very short blooming periods lasting only for a few hours. Try looking up the different types of cacti you have to determine how long their flowers last, or maybe ask someone who knows about these plants if you’re unsure. The effects may begin in under an hour and can last for around 12 hours. As the body breaks down the mescaline, the effects wear off. As the body breaks down the mescaline, the effects wear off 4. How long does the desert stay in bloom? The desert stays in bloom until temperatures get too hot for the flowers to be viable any more. Most of the time, this occurs around late June to the first week of July, although it can be somewhat sooner or later depending on that year’s climate and weather. Saguaro Flowers Saguaro flowers are usually found near the tops of the stems and arms of the cactus. They are white in color about 3 inches (8cm) in diameter. They emit a strong smell, sort of like overripe melons. Flower pollination During the night the flowers are pollinated by the lesser long-nosed bat and the Mexican long-tongued bat. Some bloom every year, others take up to 15 years to produce flowers. There are cacti that bloom in winter, other that do it in spring or autumn. No less variability presents the duration of cactus flowers. It may last more or less time depending on species. Some last a week; others disappear in one or two days. kJH5.