Managing microgreens waste is essential for sustainable farming practices in Australia. As a grower committed to environmental stewardship, I’ve developed efficient methods for disposing of excess microgreens, roots, soil, and trays while minimising environmental impact.

When harvesting microgreens, the roots, soil, and trays are often left behind. Unlike sprouts, microgreens roots are not consumed, making composting an ideal solution. Simply dump them into the compost bin, as they are biodegradable and will decompose naturally.

Initially, I attempted to compost roots and soil separately, but it proved laborious and time-consuming. Now, I gather all leftovers in large 1m3 bags for collection by local gardeners. These leftovers enrich garden soil, sprouting ungerminated seeds to yield mature greens like rocket, kale, and radish.

To minimise waste, I carefully manage seed quantities and growth periods, ensuring minimal excess microgreens. Unsold microgreens are returned to the nursery for composting, contributing to local community compost piles.

Plastic trays used for microgreens are reused to promote sustainability. Customers return trays for washing and reuse, reducing plastic waste. Alternatively, the soil from used trays can enrich home gardens or be added to worm farms or compost piles.

If microgreens wilt due to dehydration, they can often be revived. Water them and leave them in a cool area overnight for potential recovery.

Finally, can leftover microgreens regrow? In the next blog post, we’ll explore the potential for regrowth from discarded stems and roots, shedding light on further sustainable farming practices.