When receiving the Philodendron Birkin, do not repot immediately but wait at least 6-12 months or if the roots are beginning to get crowded and growing through the drainage holes. Repot in the spring, using a 2 inches bigger pot to keep the roots drier. (Too big of a planter could cause the soil to dry slower.) Place a piece of screening at the bottom of the container over the drainage hole to secure the soil and allow to drain. Use a well-draining indoor potting mix. A mix of 3 cups of potting soil, 2 cups of coconut coir, 4 cups of bark, 1 cup of perlite, and 1/4 cup of horticultural charcoal is perfect for this aroid. Water your plant in the old pot before transferring over and let sit for an hour. Add soil to the bottom to elevate the root ball. Lift the plant and release the roots against the existing planter. Use a clean knife or garden trowel to wedge between the pot and the soil to loosen. Inspect the root ball. Notice if there are any dead or rotting roots and trim them off with sterile pruners. Ensure the plant is sitting about 1 inch below the edge of the pot to avoid water spillage. Add more soil and backfill around the sides by tamping down. Fill up to the soil line but not over. Water thoroughly, leaving the soil damp but not soggy. If settling occurs, add more mix. Let the plant drain in the grower pot before setting them into a cachet pot without drainage.