A large backyard trampoline creates a localized problem for lawn maintenance, resulting in patches of long, inaccessible grass. The structure creates a unique microclimate of shade and humidity, which can stimulate faster vertical grass growth than the surrounding lawn. Addressing this dilemma requires solutions ranging from active cutting with specialized tools to long-term suppression of plant growth. The difficulty lies in navigating the low clearance and numerous support legs without damaging the equipment or the lawn.
Direct Cutting Methods Using Specialized Tools
The most immediate solution involves actively trimming the grass using specialized tools. A string trimmer, often called a weed whacker, is the most efficient mechanical tool for reaching the center area beneath a standard trampoline. To use this tool effectively, the operator must position the trimmer head horizontally and angle the shaft to reach the grass while remaining outside the frame. This technique reduces the risk of the spinning line striking the metal legs or fabric mat, which could cause damage.
For precision work directly around the support structures, manual hand shears or long-handled grass clippers offer a controlled approach. These tools allow for a slow, careful cut that prevents the accidental nicking of components on the frame. Hand shears provide the cleanest cut and are the safest option near sensitive areas of the equipment, though they are labor-intensive. Small, compact battery-powered lawn mowers or specialized robotic mowers can also be used to navigate the low clearance. These options offer a more uniform cut than a string trimmer but still require frequent repetition.
Long-Term Suppression and Ground Cover Solutions
A more permanent approach involves preventing grass growth entirely, eliminating the repetitive need for trimming. Non-chemical suppression is achieved by blocking sunlight, which is necessary for photosynthesis and growth. Laying down landscape fabric or heavy-duty rubber mats directly beneath the trampoline effectively smothers the existing turf and prevents new seeds from germinating. The chosen material should extend several inches beyond the trampoline’s perimeter to account for any shifting.
Another long-term strategy is the application of mulch or gravel, which changes the ground surface. A layer of organic material like wood chips or inorganic pea gravel should be spread at a depth of three to four inches to consistently block sunlight and inhibit weed growth. This depth creates a barrier without causing water runoff issues.
Chemical Suppression
If chemical intervention is considered, turf growth regulators (TGRs) offer a non-lethal method by inhibiting the hormone gibberellin, which is responsible for vertical shoot elongation in grass. Products containing active ingredients like trinexapac-ethyl or prohexadione calcium can dramatically slow the vertical growth rate for four to seven weeks, reducing maintenance frequency.
Ground Cover Alternatives
For those seeking a living solution, planting a low-growing ground cover is an option. Certain varieties of clover or moss require minimal maintenance and tolerate the heavy shade found under a trampoline. These plants are naturally low-profile and do not require the frequent cutting that turfgrass demands. The selection of a suitable ground cover should be based on local climate and the specific light conditions.
Safety Protocols and Trampoline Handling
Working around a large, heavy trampoline structure requires strict attention to safety and proper equipment handling. The safest and most thorough method of grass maintenance is temporarily moving the trampoline entirely out of the maintenance area. Standard backyard trampolines can weigh between 200 and 300 pounds, requiring at least two adults to lift and slide the structure a short distance.
For more frequent or solo movement, specialized trampoline wheel accessories can be attached to the frame legs. These wheels allow the entire structure to be lifted slightly and rolled into a new position without disassembly. When using power tools like string trimmers, personal protective equipment (PPE) such as safety glasses and sturdy gloves must be worn to guard against flying debris.
If chemical suppressants are applied, care must be taken to prevent herbicide drift onto the trampoline mat or springs, as some chemicals can degrade the material over time. Before attempting any maintenance beneath the frame, ensure that the trampoline is stable and securely anchored, especially if the ground is uneven or wet. Never attempt to crawl completely underneath a structure that is not securely propped up or moved, as the risk of the frame shifting or falling is significant. Always lift with bent knees and a straight back when manually moving the unit to prevent personal injury.