What made me think of this location for a pear? 1) It's perhaps the coldest part of the yard in the winter. 2) It's a good location to get rainwater, and air conditioner condensate in the summer. 3) A tree here will help shade two north facing windows during summer mornings and afternoons.


I've also been thinking about tree planting for next spring. I'd like to plant Afghan pines as part of an arc around the north part of the yard. This arc is designed as sort of an outdoor passive solar arrangement, shading the yard during summer, and allowing the sun in during winter. Afghan pines (pinus eldarica, also called Eldar pines, Mondell pines, or desert pines) are perhaps the best-adapted pines for this climate. They use little water, grow fast, tolerate poor soil, stand up to strong winds, have a pleasant fragrance, and at a mature height of about 40 ft, offer a moderately high canopy for shade. These trees are often sold in the Phoenix area as live Christmas trees.
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