I have merely expanded her image, and hope it is in harmony with hers. As a garden lover, it really taught me a lot to see sin and repentance presented in this way. This will make your heart soft and receptive, ready to repent. In fact, He feeds you with sanctifying grace as he forgives, heals, and removes those weedy sins. The sins with deep roots come out more easily too, if you and He look, take a firm hold, and pull together.
Soft soil makes for easy gardening.
Hard hearts, like hard dry soil, make for hard work. So walk around your garden with Him and work the soil daily. Weeding is best done humbly, on one's knees. It is harder to avoid seeing weeds when you look close up. Daily repentance in night prayer is good gardening practice.