Bought 4 trees from reputable on line supplier and variety was said to be fire blight resistant. Lost 3 first year to fire blight. Found HD had some Kieffer and bought when marked down in fall. 4 trees are about 12 years old and 6" in diameter. Every year original tree produces fruit and other 3 might have one pear between the three. The three from HD dont produce near the flowers in spring. Is there anything I can do with non producers. This is in northern MO.