The Plant Society
Philodendron Silver Sword
Philodendron Silver Sword (scientific name Philodendron hastatum) is a striking, rare plant with metallic-silver, arrow-shaped leaves that create a dramatic look. Known for its stunning foliage and relatively easy care, this Philodendron variety is a popular choice for collectors and houseplant enthusiasts alike.
Light
- Ideal Light: Philodendron Silver Sword thrives in bright, indirect light. Ideally, it should be placed near a window with filtered sunlight. It will tolerate medium light, but bright, indirect light will encourage faster growth and the most vibrant silver coloration in the leaves.
- Avoid: Direct sunlight can scorch the leaves, causing them to become brown or faded. Low light may lead to slower growth and duller leaves, so try to avoid placing it in dark corners of your home.
Watering
- Frequency: Water your Philodendron Silver Sword when the top 1-2 inches of soil feel dry. This typically means watering about once a week, but it can vary depending on the temperature and humidity in your home.
- Watering Tips: Be careful not to overwater, as Philodendrons are susceptible to root rot. Always check that the pot has proper drainage, and ensure you don’t let the plant sit in standing water. During the winter months, reduce watering, as the plant’s growth slows down.
- Signs of Overwatering: Yellowing leaves and a musty smell from the soil can indicate overwatering. If the soil stays too wet, the roots can begin to rot.
Temperature
- Ideal Temperature: Philodendron Silver Sword prefers warm temperatures between 65°F and 80°F (18°C - 27°C). It is a tropical plant and thrives in these warm conditions.
- Avoid: Keep it away from temperatures below 50°F (10°C), as it can cause damage to the plant. Cold drafts or sudden temperature changes can stress the plant, causing leaf drop or slowed growth.
Humidity
- Ideal Humidity: Like most tropical plants, Philodendron Silver Sword enjoys moderate to high humidity (50% or higher). Higher humidity levels will help the plant thrive and produce larger, more vibrant leaves.
- Increase Humidity: If the air in your home is dry, especially during winter, you can increase humidity by:
- Using a humidifier.
- Placing the plant on a humidity tray (a shallow dish with pebbles and water).
- Grouping plants together to create a more humid microenvironment.
- Light misting the leaves with distilled water can also help, but avoid excessive moisture on the leaves to prevent mold or mildew.
Soil
- Best Soil: Use a well-draining, light, and aerated potting mix. A good blend is typically a combination of peat-based potting soil, perlite, and orchid bark. This mix will retain moisture without becoming waterlogged.
- Repotting: Philodendron Silver Sword generally needs repotting every 1-2 years or when the plant becomes root-bound. Choose a pot that is 1-2 inches larger than the current one, and ensure it has drainage holes to prevent excess moisture buildup.
Fertilization
- Frequency: During the growing season (spring and summer), fertilize your plant every 4-6 weeks with a balanced liquid fertilizer or a diluted slow-release fertilizer.
- Winter Care: In the fall and winter, reduce fertilizing as the plant’s growth slows down. Over-fertilizing in the winter can harm the plant.
- Fertilizer Tips: Always dilute the fertilizer to half strength to avoid overfeeding, which can lead to nutrient burn or leggy growth.
Pruning & Maintenance
- Pruning: Prune your Philodendron Silver Sword regularly to encourage bushier growth and to maintain the plant’s desired shape. Trim any long or leggy stems to promote new growth. Remove any damaged or yellowing leaves to keep the plant looking neat and healthy.
- Cleaning: Wipe the leaves with a soft, damp cloth every month to remove dust and keep the leaves looking shiny and healthy. Clean leaves also help the plant photosynthesize more efficiently.
Support & Climbing
- Climbing Habit: Philodendron Silver Sword is a vining plant, and it will naturally climb or trail as it grows. You can encourage it to climb by providing a moss pole or trellis. The plant will produce larger leaves and become more robust when given a vertical support structure.
- Training: Gently tie the plant’s stems to the support as it grows. The plant’s vines will naturally wrap around the support, helping it grow vertically.
Pests & Problems
- Common Pests: While relatively pest-resistant, Philodendron Silver Sword can attract mealybugs, aphids, spider mites, and scale. Regularly check the undersides of the leaves and the stems for pests. If you notice any, treat the plant with insecticidal soap or neem oil.
- Leaf Yellowing: Yellow leaves can be a sign of overwatering, nutrient deficiencies, or insufficient light. Ensure the plant is receiving adequate light and water, and check for any signs of root rot.
- Brown Leaf Tips: Brown leaf tips often indicate low humidity, underwatering, or exposure to cold drafts. Ensure the plant is in a stable environment with consistent moisture and humidity.
Toxicity
- Note: Like most Philodendrons, Philodendron Silver Sword is toxic to pets (cats and dogs) if ingested. It contains calcium oxalate crystals, which can cause irritation and discomfort in the mouth and digestive system. Keep the plant out of reach of curious pets.
Additional Tips
- Leaf Color & Growth: The beautiful silver coloration of the leaves may fade if the plant is grown in low light. To maintain the bright silver hue, provide the plant with ample bright, indirect light.
- Propagation: Philodendron Silver Sword can be propagated through stem cuttings. Simply take a cutting with a node (the small bump on the stem where leaves emerge), place it in water or moist soil, and wait for it to root. Once rooted, the cutting can be potted up in its own container.
- Air Purification: Like many Philodendrons, Philodendron Silver Sword helps purify the air by removing harmful toxins such as formaldehyde and benzene.
Philodendron Silver Sword is a stunning and relatively easy-to-care-for plant that rewards you with its beautiful, metallic foliage. With proper care, it will thrive and become a highlight of your plant collection.