Transform an old bathtub into a stunning garden feature. Whether you have a clawfoot tub or a modern acrylic model, repurposing it as a planter adds rustic charm and maximizes growing space. This guide covers everything from preparation to plant care.
Why Choose a Bathtub Garden?
A bathtub garden offers several advantages: it provides a large container for deep-rooted plants, retains moisture well, and becomes a conversation piece. Unlike traditional raised beds, a bathtub can sit on a patio, deck, or even in a small backyard. Plus, it’s an eco-friendly way to reuse a fixture that might otherwise end up in a landfill.
Step-by-Step: Preparing Your Bathtub
1. Drill drainage holes. Use a drill with a masonry bit (for porcelain) or a standard bit (for acrylic). Add at least 8-10 holes in the bottom and a few on the sides near the base. This prevents waterlogging, which can rot roots.
2. Clean the tub thoroughly. Remove any soap scum or residue with a mild cleaner. Rinse well so no chemicals remain.
3. Add a drainage layer. Place 2-3 inches of gravel or broken pottery shards at the bottom. This improves drainage and prevents soil from clogging holes.
4. Fill with quality potting mix. Avoid garden soil—it compacts in containers. Use a lightweight, well-draining mix amended with compost or perlite.
Choosing the Right Plants
Pick plants that thrive in containers and match your sun exposure. For a sunny spot, consider tomatoes, peppers, or marigolds. For shade, try ferns, hostas, or impatiens. Mix trailing plants (like sweet potato vine) with upright ones for visual interest. Avoid invasive species or trees with aggressive roots.
Common Mistakes to Avoid
Poor drainage: Without enough holes, your plants will drown. Test by filling the tub with water—it should drain within an hour.
Using heavy soil: This leads to compaction and poor root growth. Always use container mix.
Overwatering: Bathtubs hold more water than standard pots. Check soil moisture 2 inches deep before watering.
Ignoring weight: A filled bathtub can weigh hundreds of pounds. Place it on a sturdy surface, like a concrete patio or reinforced deck.
Maintenance Tips
Water deeply but less frequently—once the top inch of soil dries out. Fertilize every 4-6 weeks with a balanced liquid fertilizer. Prune dead leaves and spent flowers regularly. In cold climates, move the tub to a sheltered spot or wrap it in insulation to prevent cracking.
Frequently Asked Questions
Can I use a bathtub for vegetables? Yes, but ensure it’s lead-free (older tubs may have lead paint). Test with a home kit.
How do I winterize a bathtub garden? Empty the tub or cover it with a tarp to prevent freezing. For hardy plants, mulch heavily.
Will the bathtub rust? Cast iron tubs can rust if the enamel chips. Apply a rust-resistant primer and paint if needed. Acrylic tubs won’t rust.
Conclusion
A bathtub garden is a creative, practical way to grow flowers, herbs, or vegetables. With proper drainage, the right soil, and plant selection, you’ll enjoy a unique container garden for years. Start by sourcing a tub from a salvage yard or your own renovation—then follow these steps for success.