Annual meadows thrive on normal to high fertility soils making them perfect solutions for most gardens and parks. The richer the soil though the taller and bushier the plants will be and the thinner and poorer, the opposite will happen. Normally if you grow annual meadows on the same patch of ground for more than 3 years you will see the fertility start to decrease and the emerging meadows look finer and shorter. If you suspect that the soil is very rich then it’s probably best to reduce the sowing rate a little. Equally if it’s very poor either just enjoy the daintier display or increase the sowing rate a little.