* Roofing felt is not biodegradable: It's made from asphalt-saturated felt paper, which will not break down in the soil. This means it will persist in your garden for a long time, potentially harming the environment and your plants.
* Roofing felt is not suitable for plant growth: It doesn't allow for proper drainage and aeration, which are essential for healthy root development. This could lead to root rot and stunted growth.
* It's not a safe material for food production: Roofing felt may contain chemicals that could leach into your tomatoes and make them unsafe to eat.
Here are some better alternatives for ring culture and growing tomatoes:
* Recycled plastic bottles or containers: These are readily available, relatively inexpensive, and have good drainage capabilities.
* Wooden barrels: These can be repurposed for ring culture, but make sure they are properly treated and free of harmful chemicals.
* Compostable materials: Look for pots made from materials like coconut coir or sugarcane pulp, which will eventually break down and add nutrients to your soil.
Remember: Prioritize sustainable and safe materials for your garden. Using roofing felt is not recommended for growing food.