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Growing foxglove (Digitalis purpurea) in cinder blocks offers a creative and space-efficient way to add vibrant color to your garden or patio. Using cinder blocks as containers not only provides a sturdy base but also creates a rustic, urban aesthetic that complements the plant’s tall, spiky flowers.
Choosing the Right Cinder Blocks
Select cinder blocks that are in good condition, free of cracks or damage. Standard hollow blocks work well, as they provide ample space for soil and roots. Consider using blocks with open ends for better drainage and aeration.
Preparing the Cinder Blocks
Clean the cinder blocks thoroughly to remove any dust or debris. If desired, you can paint or decorate the exterior for a personalized touch. Drill drainage holes in the bottom of the blocks if they do not already have openings, ensuring excess water can escape and prevent root rot.
Filling the Cinder Blocks with Soil
Use high-quality potting soil mixed with compost to provide nutrients. Fill the hollow sections of the cinder blocks, leaving about 2-3 inches at the top to prevent soil from spilling out. Ensure the soil is well-draining to accommodate foxglove’s preference for moist but not waterlogged conditions.
Planting Foxglove in Cinder Blocks
Choose healthy, young foxglove plants or seedlings. Carefully remove them from their nursery containers and plant them in the soil-filled hollows of the cinder blocks. Space multiple plants at least 12 inches apart if placing more than one in a single block.
Care and Maintenance
Place the cinder block containers in a location that receives full to partial sunlight. Water the foxglove regularly to keep the soil moist but not soggy. Mulching around the plants can help retain moisture and suppress weeds.
Fertilize every 4-6 weeks with a balanced, water-soluble fertilizer to promote healthy growth and abundant flowering. Deadhead spent flowers to encourage further blooms and prevent unwanted seed spread.
Additional Tips for Success
- Ensure proper drainage to prevent root rot.
- Rotate the placement seasonally to optimize sunlight exposure.
- Protect the plants from extreme cold by moving the containers indoors or covering them during winter.
- Use a trellis or support for tall foxglove varieties to prevent toppling.
Growing foxglove in cinder blocks is an innovative way to bring height and color to your garden while repurposing materials. With proper care, your container foxglove will thrive and create a striking display that is both functional and decorative.