What is the symbiotic relationship between poison ivy and willow oak?

Will bramota grass kill grass burrs? What in the scientific name for hemlock trees? What does plant fertilizer have in it? How should I prepare my bougainvillea for wintering to ensure it survives the colder months successfully? How can I learn more about stone fruit tree grafting techniques and best practices? What are pines spruces and firs? What tropical fruit has a wrinkled purple- brown exterior with a yellowish interior and edible seeds? How can I set up an automatic plant waterer for indoor plants? Where is the titan arum native to? How are ferns asexual? How big can tulips grow up to? Is an acorn the same as a hazel nut? What part of the caraway do you eat? How can you protect your garden flowers? What are predators for the sunflower? When using softwood state why hemlock is preferred to European redwood for the spindle balusters? How deep can tree roots go and what impact does their depth have on the surrounding environment? Why does burdock stick to clothing? What is name of leaves in kannada and marathi? How long does it take for poison oak to heal?