Teresa
When I line out two weeks after bloom, it is very hot here in North Carolina.... so I just use a light application of Plant Tone since it is an organic that won't burn the plants. Once foliage has regrown and I see the increase fans growing, I'll give the line outs a foliar spray of Miracle Gro. I have excellent well drained soil.....full of compost and worms.....which helps when lining out in really hot weather. Keeping the plants well watered also helps a lot. But my routine would be disastrous in clay soils in zone 8 or 9. Plants that are lined out during hot weather would likely rot.