The answer to 'stone walkway not growing' is that it is likely due to compacted soil, lack of sunlight, or improper drainage. Stone walkways require proper soil preparation, drainage, and maintenance to ensure grass and other plants can grow around and between the stones.
Common causes include heavy foot traffic compacting the soil, not enough sunlight reaching the soil, or water pooling and preventing grass growth. Solutions may involve aerating the soil, adding topsoil or compost, improving drainage, and ensuring the walkway gets enough sunlight.