Certified GKH Gardening Expert
Just water them enough to keep the soil from becoming too dry. You can simply check the soil by touch (insert finger about an inch) to see if it is moist or not. As for the Baby-Bio, this plant food is high in nitrogen so I would be careful about using it as it may 1) burn the roots and 2) inhibit blooming. A general all-purpose plant fertilizer with a lower nitrogen ratio should suffice and only needs to be fed twice yearly (spring and fall).