10. Neutering is easier on both surgeon and rat when done as young as possible, even at 4 weeks. Although a neuter can be done at any age, I don t like doing it on rats over 18 months of age because an elective surgery is more risky on an older rat.A neutered male may continue to be fertile for 3 weeks after the surgery.Neutering a male rat is a little more complicated than neutering a dog or cat.lthough a neuter can be done at any age, I don t like doing it on rats over 18 months of age because an elective surgery is more risky on an older rat. A neutered male may continue to be fertile for 3 weeks after the surgery. Neutering a male rat is a little more complicated than neutering a dog or cat.
Southern magnolias grow from 1 to 2 feet a year, reaching 60 to 80 feet tall with canopies spreading 30 to 50 feet wide. This is rated as a slow-to-medium rate of growth, but how fast a tree will grow varies with the cultivar and growing conditions.Southern magnolias are found on every major plantation of the old South and flank the club house at Augusta National golf course in Augusta, Georgia.his is rated as a slow-to-medium rate of growth, but how fast a tree will grow varies with the cultivar and growing conditions. Southern magnolias are found on every major plantation of the old South and flank the club house at Augusta National golf course in Augusta, Georgia.
Prune minimally to shape the tree and control its size. Fertilize magnolias in spring as new growth appears with a balanced fertilizer. Apply Â½ to 1 cup of 10-10-10 fertilizer around the base of the tree, depending on the age and size of the tree. Larger trees need more fertilizer. Magnolia macrophylia is grown as much for its foliage as its flowers. 2  Hardy in USDA zones 5 through 9, the tree grows 30 feet tall with leaves that can grow to 3 feet long.