The answer to 'seeding has weeds' is that weeds can often grow in newly seeded areas due to factors like poor soil preparation, improper seed selection, or inadequate weed control. Weeds can compete with the desired grass seed for nutrients, water, and sunlight, leading to an uneven, patchy lawn.
Common causes of weeds in newly seeded areas include: 1) existing weed seeds in the soil that germinate faster than the grass seed, 2) improper soil preparation that leaves weed seeds near the surface, and 3) using low-quality grass seed that is overtaken by more aggressive weed species. To address this issue, it's important to properly prepare the soil, use high-quality grass seed, and implement effective weed control measures like pre-emergent herbicides or hand-pulling weeds.