Additional Details ------------------------------ Product description: Underhill Deep Drip Tree Spikes 8-Inch Underhill Deep Drip Tree Spikes offer an efficient way to deliver water directly to juvenile trees, flowers, fruits, vegetables, and small garden plants. Use the Tree Stakes with your garden drip irrigation system or tree berm and hose. Root irrigation lowers water consumption by up to 50% by reducing surface evaporation and run-off erosion. Save time and money by delivering water underground where your plants need it the most. The plant watering system spikes aerate the soil, delivering water, oxygen, and nutrients to the root area. It?s easy to add fertilizer to the shaft to further accelerate root growth. Made from heavy-duty ABS plastic with a sun protected cap. The innovative design features a mesh covering which prevents dirt and debris from clogging the spikes. The Deep Drip Tree Spikes are simple to insert into all soil types and re-position for efficient root watering.