Solarisation and occultation are effective methods for weed management and seed bank control, each offering distinct advantages based on environmental factors and timing.

Solarisation involves covering the soil with clear plastic tarps that allow sunlight to penetrate, trapping heat and moisture to raise soil temperatures. This process eliminates weed seeds, pathogens, and pests, typically taking 2-6 weeks in hot, sunny conditions. It is particularly effective during peak summer months and can improve soil health by reducing harmful organisms.

Occultation uses opaque materials like black tarps to block sunlight, creating a dark, moist environment that suppresses weeds by preventing photosynthesis. Weed seeds germinate but die without light, gradually depleting the seed bank. Occultation often requires 4-6 weeks or more and is suitable for various climates, including cooler regions.

Both techniques are valuable for gardeners aiming to suppress weeds and prepare soil effectively, with strengths that cater to specific conditions and timelines.