· if you only plan to display your mums for the season, you dont have to put as much thought into location as you would for perennial flowers. For the most prolific blooming, mums need full sun, or at least six hours of direct sun exposure a day. Empty space in my flower bed, a few pots, and containers. As i didn’t want to waste time, i started searching for the best place to plant them. To help prevent you from making a costly mistake, we spoke to gardening experts about the five places you should avoid planting mums. · in this information, consultants share the place to not plant mums , and supply their greatest planting suggestions for rising mums that final. · from soggy spots to shady areas, experts share where not to plant mums if you want them to flower bigger and better this fall. · here are four places you should never plant mums in the garden. They also do well in part sun, though the plants start to thin out and produce fewer blooms with too much shade. · martha stewart us · marthastewart. com 5 places you should never plant mums not every spot is a good one. · naturally, there are certain areas of your garden where mums wont thrive, whether its due to spatial limitations, soil type, or the amount of sun. · there were lots of options for where to plant my mums : Still, mums do require lots of sunshine, regular watering, and frequent deadheading.