Because microgravity conditions in space produce complications in root control and water movement, Lada uses special root systems. For soil, Lada uses granulated, non-oxidized clay enriched with a long duration time-release fertilizer. Lada also uses wicks used to seal the top openings in the roots, to hold the seeds in place during germination and to provide an easy access path to the surface.

Safety and health precautions

Samples of plant tissue from previous Lada crops are continually analyzed by flight surgeons to reduce safety risks. Such tests search for any dangerous microorganisms (such as bacteria and viruses) that initiate food-borne disease, develop in the closed ecosystem of the cabin, or spread through unsafe water distribution. Scientists also hope to alleviate plant exposure to ethylene, a colorless, flammable gas that reduces pollination and fruit development and is 5,000 times more toxic to plants than carbon monoxide is to humans.

Self-monitoring equipment and scheduled breaks from their rigorous schedules are now providing crew members with more personal time to relax on the ISS. Lada provides an ideal opportunity for therapeutic gardening and a respite from the pressures of cabin life. Crew members find the plant life refreshing and companionable, and they enjoy the recreational activity.

Related Information

Gardening in Space

Microgravity and in-space plant growth

Safety and health precautions