It is accepted for use by the City of Tucson and most neighborhood associations. A popular imported landscape addition since around the 1930s, the Olive tree has become one of Arizona’s’ most notorious contributors to our seasonal allergy misery. With no fruit, there’s no mess along your stonework, pathway, patio deck or poolside. We won't spam you. Bloom color: n/a It can live for more than 150 years, has light gray, scaly bark and ovate gray-green leaves. Swan Hill Olive Tree With Suspicious Pollen Clusters, 16611 S 40th St, Ste. They are generally associated with the Mediterranean region, where they have been in cultivation for more than 5000 years! ‘Wilsonii’ is a fruitless variety that produces little to no pollen. We are a local company: your privacy and comfort matter to us. Cold hardiness: 15° F. Our catalog features almost 600 different plants. Is there someone special in your life who loves to watch things grow? Then click any image to learn more details about each olive tree cultivar. The Olive tree is so sensitizing that planting fruiting Olives has been discouraged or banned in Phoenix and Tucson since the 1960s Nurseries and landscape companies are not allowed to sell or plant them. Since the tree doesn’t put energy into making fruit, it grows a little faster than fruiting olive trees. Fruitless Olive trees crave full sun and are able to tolerate poor, stony, shallow soils so you can plant this tree on a variety of landscape styles. If you wanted a nice, hypoallergenic shade tree in your yard in Ahwatukee you just asked your landscaper or nursery for a Swan Hill Olive and you were set. The Olive tree is so sensitizing that planting fruiting Olives has been discouraged or banned in Phoenix and Tucson since the 1960s    Nurseries and landscape companies are not allowed to sell or plant them. With no fruit, there’s no pollen. The other problem (which is what made me think of that phrase from Jurassic Park) is that non-fruiting Olive trees may revert back to their natural, virile state. Flowering season: n/a Choose fruiting or fruitless olive trees, country of origin, or landscape versus commercial use. Other plants are not so economic and literally toss their goods to the wind, producing a dust storm of pollen in hopes that out of the enormous quantity of pollen produced, some will reach their mark. All this blowing pollen gets on our skin, in our eyes, up our noses, and down our windpipes, causing itching, sneezing, dripping, and wheezing. In the plant world, this power is on grand display every spring in the form of fantastic flowers and although flowers look and smell nice,  it’s all business for the plant. The most distinctive visual feature of an Olive Tree is its smooth grey trunk that becomes gnarled and knotted with age, endowing each tree with unique character and a picturesque silhouette. Reproduction is one of the most powerful forces in nature. Height: 25 – 30 feet Height: 25 – 30 feet Width: 25 feet This is where we come in. The Olive’s evergreen, silvery foliage creates a finely textured, cloud-shaped canopy, casting deep to filtered shade throughout the long life of the tree. Olive trees have been grown for so long that it’s unclear exactly where they originally came from. When plants require the services of insects such as bees to deliver pollen from one plant to another, those services are advertised and paid for in the currency of attractive flowers and sweets (nectar). The fruitless olive is a distinctive evergreen that grows at a slow to medium rate to twenty-five to thirty feet tall and wide, and has an airy appearance. ‘Wilsonii’ is a fruitless variety that produces little to no pollen. At maturity, this variety can reach 35 feet in height but is drought intolerant. This is an efficient system with little wasted pollen. It is accepted for use by the City of Tucson and most neighborhood associations. Width: 25 feet How to Water Olive Trees. The Arizona Olive Tree: Public Enemy Number One. USDA minimum zone: 8 NO SPAM ZONE: You can unsubscribe at any time. 170, Phoenix, 85048 | (480) 705-8844 |, http://www.allergywise.com/wp-content/uploads/2016/06/1-2.jpg, http://www.allergywise.com/wp-content/uploads/2016/04/ahwatukee-allergy-specialist.png, Arizona Olive Trees: Life Will Find a Way, © Copyright - Arizona Allergy and Asthma Specialists -. This feature has resulted in the Swan Hill fruitless olive tree becoming more popular. Give them a gift that grows: a Civano Nursery Gift Card. The Olive’s evergreen, silvery foliage creates a finely textured, cloud-shaped canopy, casting deep to filtered shade throughout the long life of the tree. The Swan Hill olive is the most popular variety of fruitless olive tree. Olive trees for sale, filter selections by clicking on the criteria below. Olives trees (Olea europaea L.), hardy in U.S. Department of Agriculture plant hardiness zones 9 through 11, are drought-tolerant … A popular imported landscape addition since around the 1930s, the Olive tree has become one of Arizona’s’ most notorious contributors to our seasonal allergy misery. You probable could not tell the difference in a newly planted tree and by the time it became clear that your supposedly impotent hypoallergenic purchase was actually quite capable of doing it’s part to propagate the species, yanking a mature tree out of the yard might not be an appealing option. Click to find the information you need to select those adapted to your environment. This was described to me by a landscape business owner in Ahwatukee who has witnessed this transformation in trees that he knew to be true San Hill varieties, but which, in time, found their true, pollinating machismo, as it were. One problem is that there have been reports of nurseries in the East Valley selling conventional Olive trees as the non-fruiting variety. With very little water requirements once established, this resilient medium-sized tree can grow with a widespread, making this a great tree for use as a canopy tree for shade or as a silhouette against structures, bringing shade to sun-facing rooms. It is either a single- or multiple-trunk, has narrow, gray-green foliage with a light silvery-green on the undersides of the leaves. And yet, the Olive tree is an attractive tree and still very popular, and so to get around the planting restriction, “non-fruiting” (less pollen and less fruit) varieties, such as the San Hill Olive, were developed and sold by nurseries as a less messy and hypoallergenic alternative.

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