Collection
The average papaya leaf stays on the tree for four to six months, then turns yellow and falls off. Unlike many temperate climate trees, papayas do not lose their leaves in the cool season. Instead, they shed them throughout the year. You may need to collect the leaves and place them in a dry location for several months to produce enough mulch for your garden. If your papaya leaves seem to be falling off quickly, the tree may have a nutritional deficiency or disease.
Shredding
Because papaya leaves can measure up to 3½ feet long and 2 feet wide, you must shred them before using them as effective mulch. You can place the leaves in a shallow pile and chop them with a lawnmower, put them through a wood chipper or leaf shredder, or shred them manually using garden shears or a machete. Ideally, the final product will be composed of many small, even pieces. Irregular leaf shreds usually take longer to break down into mulch and may be more difficult to apply to your garden.
Composting
Leaf mulch is most effective when pre-composted. This process helps create a denser mulch that is less likely to blow away. It also starts the decay process, preventing the mulch from tying up nitrogen and other nutrients your tomato plants need to grow. Place the leaf shreds in a pile in a sheltered location. You can also use large plastic bags or open bins, as long as the leaves are protected from excess rain. Allow the leaves to compost for up to two years, turning the pile occasionally, until the material becomes crumbly and