The depth to which cannabis roots can grow depends on various factors such as soil type, water availability, and other environmental conditions. In general, cannabis roots can grow as deep as 2-3 feet (60-90 cm) in loose, well-draining soils. However, in compacted or clay soils, the roots may not be able to penetrate as deeply and may be more shallow. Additionally, the root system of cannabis plants can also spread laterally, often covering an area equal to or larger than the above-ground plant canopy. The root system of cannabis is critical for plant health and growth, as it allows the plant to absorb water and nutrients from the soil.