Can you tell us more about everything....
Tank size, type of dirt used, how deep, type of cap used and how deep. Number and species of plants, finial stocking plan, type of filter. how long has it been setup/running.
What kind of lights are you using, age of bulbs, kelvin, watts and photoperiod.
Natural planted tanks can be awesome setups and once mature need very little care.
Depending on what type of plant-you can lay a rock on the roots to keep it in place-then remove the rock once the plant has anchored itself.