Consider placing your pots on a seedling heating mat. This will warm the soil and increase chances of germination. Sow another round if you think you planted your seeds too...
Peony foliage can be trimmed to within 1" of the soil in the fall, after the leaves have browned. Do not trim your plant during the growing season. The foliage...
My best guess is that the pebbles and brick contain limestone, which is easily dissolved in water and will raise the pH of the soil. You'll have to water with...