1 Keep weeds from competing with your strawberry plants. 2  Make a hole large enough to spread the roots. 3  Hill the center of the hole and place the crown slightly above soil level. 4  Spread the roots downward on the hill. 5  Fill the hole, making sure the soil only goes halfway up the crown.
(Redirected from Circle of willis). The circle of Willis (also called Willis' circle, loop of Willis, cerebral arterial circle, and Willis polygon) is a circulatory anastomosis that supplies blood to the brain and surrounding structures.It is named after Thomas Willis (1621â1675), an English physician.Redirected from Circle of willis). The circle of Willis (also called Willis' circle, loop of Willis, cerebral arterial circle, and Willis polygon) is a circulatory anastomosis that supplies blood to the brain and surrounding structures.
From the ground to the roof it is 442 meters (1,450 feet) tall. It was designed by Fazlur Khan and Bruce Graham. Willis Tower is the second-tallest building in the United States. It is the eighth-tallest freestanding structure in the world. It is one of the most popular tourist destinations in Chicago.