We kept all the herbs, grasses and planter fillers inside their individual plastic pots. Instead of transplanting, we simply placed the pots inside the larger pot to make it look like it is one large potted plant.
If you’re using a really tall planter like we are with this laundry basket, place some water resistant surfaces inside the pot.
Start with the tallest potted plant and place that in the center.
Next, begin to layer in the herbs from tallest to smallest, staggering them around the center grass.
Lastly, add the pot fillers evenly around the planter for fullness and balance.
Use a watering can to water the individual pots regularly to avoid them drying out.