MESA, Ariz. — Jane Falkenstein’s home appears like any other single-household property in the Salt River Valley of Arizona — beige stucco, gravel garden, a two-car garage, a shaggy palm tree.

The path to her entrance door offers the initial indication that her household is something exclusive. A experienced plumeria tree with dozens of fragrant yellow and white flowers wraps close to the walkway. Her open windows emit the appears of squawking birds, which carry very clear to the stop of the cul-de-sac. Above her doorbell is a stained-glass window that depicts a inexperienced Amazon parrot.

These eccentricities portend, even though rarely get ready a customer for, the smaller miracle tucked absent in Mrs. Falkenstein’s backyard — a dense jungle of rare Latin American and Asian fruit trees in a single of the hottest and most arid city environments in North The usa.

The architect of this yard ecosystem was her husband, Dr. Alois Falkenstein Jr., a German immigrant, U.S. Air Power veteran and ophthalmologist who commenced cultivating fruit vegetation that most Arizonans experienced never ever tasted. His harvests included jabuticaba berries, longans, loquat plums, pluerries, white sapotes, Keitt mangoes, finger limes, doughnut peaches, bergamot oranges and Fujian Bai Mi figs, a species regarded colloquially as Nixon peace figs just after Mao Zedong gave cuttings of the plant as a peace featuring in the course of the president’s vacation to China in 1972.

Dr. Falkenstein, who died in 2015 at age 68, was fluent in German and could browse and create in numerous languages, claimed Mrs. Falkenstein, 73, including that these techniques proved practical in his operate as an in-flight health practitioner and a translator for diplomats.

In his no cost time, Dr. Al, as he was known, studied crops. “He wrote several articles or blog posts about gibberellic acid and the growth patterns of fruit vegetation,” she mentioned. “He was a curious man or woman and a quick learner.”

Dr. Falkenstein broke floor on his backyard yard when the few moved into the household in 1981 he was disappointed with the deficiency of tropical fruit in nearby grocery shops. Years later, he traveled to San Diego with his sons, Alexander and Chris, to investigate tropical fruit species above three-working day weekends.

“My brother and I realized these journeys weren’t intended to be extravagant — they had been meant to train us issues,” recalled Alexander, 34. “He would choose us to museums and gardeners’ properties. He would communicate to unusual fruit growers about their preferred guides and tips. I could tell that there was a large amount of mutual respect and admiration there.”

These trips enabled Dr. Falkenstein to transport dozens of plant cuttings again to the desert for propagation, and to implement his friends’ collective know-how to his fledgling back garden. Little bit by bit, he reworked the barren filth into a tropical microclimate. He designed rows of shaded trellises, a rooster coop, a device shed and a big greenhouse that his mates jokingly referred to as his “shop of horrors.”

The greenhouse was his laboratory and staging ground, a meticulously taken care of space for the fragile approach of elevating tropical plants in the desert. Many of these plant types had been the progeny of his discouraging, pre-internet experiments in cross-pollination. When his dragon-fruit flowers opened up for the night, he would put on a headlamp, retrieve a person of his pollen containers from the freezer, and meticulously pollinate his most resilient plants with a cotton swab.

His experiments in the greenhouse resulted in the generation of several hybrid plant kinds uniquely tailored to lifetime in the desert. He gave a person of the ensuing dragon-fruit kinds Alexander’s childhood nickname, Falco.

“When people today requested me what my husband did, I would explain to them he was a horticulturalist,” Mrs. Falkenstein said. “I by no means said that he was an ophthalmologist due to the fact he was extremely focused to his yard. It was not his job, but it was his like.”

In 2008, Dr. Falkenstein was diagnosed with cancer and explained to he had 18 months still left. He lived for 7 much more years. A couple of times immediately after his dying, Alexander took more than as caretaker of the back garden, supplying himself a year to figure out what to do with the yard.

“I knew that if we did not devote some time into upkeep and technique, the difficulty was heading to expand exponentially,” he mentioned. Functioning in the backyard garden a few times a week, he swiftly understood that he understood minor about the artwork and science of uncommon fruit cultivation. Lots of crops in the backyard required significant notice. Shade and frequent pruning have been a should. Freezing wintertime nights also presented a substantial obstacle.

Mr. Falkenstein turned to the Arizona Exceptional Fruit Growers, a group of beginner pomologists that his father aided identified in 1995. As of January, the team experienced additional than 5,000 followers on Fb it often hosts gatherings like “Mulberry Taste-Off!” and “What R U Rising, and How To Propagate Additional!” Quite a few of its senior associates have fond recollections of Dr. Falkenstein’s technological approach to the passion, and his items of fruit and plant cuttings.

For a lot of unusual fruit enthusiasts in the Phoenix area in the 1980s and ’90s, Dr. Falkenstein was the 1st to exhibit that it was probable to expand these incredible vegetation in the desert.

“It was as organic as respiratory for him,” claimed Ruth Ann Showalter, a longtime member of the growers’ business. “He was a terrific teacher, and the group is not the exact without the need of him.”

In several approaches, Mr. Falkenstein picked up wherever his father still left off. He visits rare fruit growers at their residences, and has a uncommon-fruit yard of his individual with mango, banana, loquat, peach and citron trees. He presents away all of the fruit, and shares what he has learned at growers’ meetings.

“The goal is to share all of this understanding and fruit,” he stated. “The tactic is to expand points that I actually appreciate so I can maintain it all likely.” (He a short while ago gave various mangoes to the Phoenix Suns’ executive chef, Brendan Ayers, who employed the fruit to make salsa for the workforce.)

Like a lot of exceptional-fruit growers in the Salt River Valley, Mr. Falkenstein fears that worsening drought problems will power them to modify their approach.

“We test to limit h2o loss by making sure that our soil is healthful,” he stated, introducing that he has eliminated plants that have to have additional water, together with his father’s banana trees. “We use a great deal of mulch and wood chips, which can lead to a 30 to 50 per cent reduction in drinking water requires.”

He tries to be real looking about his gardening — there is only so significantly he can do to retain the vegetation alive and to continue to keep the yard manageable for his mother.

In numerous methods, his efforts are a continuation of his father’s perform. “My father experienced a excellent name that he gained more than a life span,” he reported. “If he were being alive today, I imagine he would be very pleased of how considerably his generosity life on.”