It would be wonderful if lawns took care of themselves, but like most plants growing in your garden, they need your help. Lawn care includes seasonal attention to keep it healthy and green. Lawn maintenance starts with weed removal. Weeds block air and nutrients from feeding grass roots. Next, it's time to remove thatch and mulch with a garden rake. Good drainage is essential to healthy green lawns. If you have poor water drainage, you may need to consider adjusting the soil type with organic additives.