Philodendron Red Heart, also known as Philodendron erubescens red heart, is a beautiful houseplant known for its burgundy & red coloured leaves. Here is a detailed care guide for the Philodendron Red Heart:

Light: Philodendron Red Heart does well in moderate to bright, indirect light. They can tolerate lower light conditions, but their growth may slow, and the vibrancy of their leaf colour might decrease. Avoid direct sunlight, as it can scorch the leaves.

Temperature: Ideal temperatures for this plant are between 65 to 85 degrees Fahrenheit (18 to 29 degrees Celsius). As a tropical plant, it does not tolerate frost or freezing conditions. Keep it away from drafty doors and windows during winter months.

Water: Water the plant when the top 1-2 inches of the soil feels dry to the touch. This will likely mean watering roughly once a week, but always check the soil's moisture levels before watering. Be careful not to overwater, as this can lead to root rot.

Humidity: Philodendron Red Heart loves high humidity but can adapt to the average home's humidity levels. If you live in a particularly dry climate, consider using a humidifier, placing it on a water-filled pebble tray, or grouping it together with other plants to increase humidity levels.

Soil: This plant prefers well-draining soil to prevent water-logging. A mixture of potting soil, perlite, and orchid bark or coco coir can work well. The addition of perlite and orchid bark or coco coir helps to provide aeration and drainage that the Philodendron Red Heart needs.

Fertilizer: Feed your Philodendron Red Heart every two to four weeks during the spring and summer with a balanced houseplant fertilizer diluted to half the recommended strength. Reduce feeding during the fall and winter, as the plant's growth naturally slows down.

Repotting: Philodendron Red Heart should be repotted every 1-2 years, or when it becomes root-bound. Spring or early summer is the best time to repot. Choose a pot that is 1-2 inches larger in diameter than the current one and has good drainage.

Pruning: This plant can be pruned to maintain its size and shape. Always use clean, sharp scissors or pruning shears and cut just above a leaf node. The pruned stems can be propagated if desired.

Propagation: Philodendron Red Heart is relatively easy to propagate. Cut a few inches below a node (the point where a leaf or branch is attached to the main stem), and place the cutting in water. Once roots are established, you can pot it up in soil.

Pest Control: Watch out for common houseplant pests like aphids, mealybugs, and spider mites. Regularly wipe your plant's leaves with a damp cloth to keep them dust-free and inspect for any signs of pests. If you spot any pests, treat the plant with an insecticidal soap or a mixture of water and dish soap, making sure to isolate the plant from your other houseplants to prevent spreading.

Remember, your plant's needs may vary based on environmental conditions, so always monitor its health and adjust your care routine accordingly.