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15 Powder-coated metal is generally not toxic for growing food, provided the coating is food-grade and free of heavy metals like lead. However, it is typically an inappropriate choice for blueberries due to their unique soil requirements.⚠️ Why Powder-Coated Metal is Risky for BlueberriesHigh Soil Acidity: Blueberries require incredibly acidic soil (pH of \(4.5\) to \(5.2\)). Highly acidic environments can cause certain metals to leach more readily, potentially altering the soil chemistry and harming the plant.Temperature Swings: Metal acts as a rapid thermal conductor. In the Los Angeles summer, the metal will absorb heat and cook the delicate, shallow root system of the blueberry bush. In cold snaps, the soil will freeze much faster than in other materials.Nutrient Inactivity: Blueberries require specific ericoid mycorrhizal fungi and iron-rich organic matter (like pine bark and peat moss) to thrive. Metal pots disrupt this environment.💡 Better AlternativesIf you are determined to use your powder-coated pot as an aesthetic "outer" container, you can line it with a heavy-duty, food-safe plastic grow bag to insulate the roots and prevent the soil from touching the metal. Otherwise, the best containers for blueberries include:Fabric Grow Bags: Highly recommended by container gardeners as they provide excellent aeration and keep roots cool in warm climates.Large Plastic Containers: Look for food-grade, BPA-free plastics with recycling codes \(2\) or \(5\).Unglazed Terracotta / Ceramic: Breathable materials that prevent waterlogging, though they may dry out quickly in the summer heat.Before committing, you can consult guides on the University of California Agriculture and Natural Resources portal or consult your local LA County Master Gardener Program for specialized container gardening tips for Southern California.
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Nice deal. Planning on spreading the two a few feet apart and connecting via wood trellis for jasmine to connect with drip irrigation running to both planters.
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Quote
from mkdenar
:
Why is that?
I read through the specs and there is a warning about lead exposure. Which makes sense in this context.
I looked at some trellises from Lowes I was considering, and they are also powder coated steel but no lead or prop 65 warning on them. I was just double checking if they all have these warnings or not, and clearly there are better options.
Which is a shame because I like this deal and almost bought it anyways.
thanks for the explanation. What if one used clay inner pot or liner? Ask bcs folks living in wildfire zones really need to avoid using highly flammable plastic or resin pots within 5 feet of their home.
15 Powder-coated metal is generally not toxic for growing food, provided the coating is food-grade and free of heavy metals like lead. However, it is typically an inappropriate choice for blueberries due to their unique soil requirements.⚠️ Why Powder-Coated Metal is Risky for BlueberriesHigh Soil Acidity: Blueberries require incredibly acidic soil (pH of \(4.5\) to \(5.2\)). Highly acidic environments can cause certain metals to leach more readily, potentially altering the soil chemistry and harming the plant.Temperature Swings: Metal acts as a rapid thermal conductor. In the Los Angeles summer, the metal will absorb heat and cook the delicate, shallow root system of the blueberry bush. In cold snaps, the soil will freeze much faster than in other materials.Nutrient Inactivity: Blueberries require specific ericoid mycorrhizal fungi and iron-rich organic matter (like pine bark and peat moss) to thrive. Metal pots disrupt this environment.💡 Better AlternativesIf you are determined to use your powder-coated pot as an aesthetic "outer" container, you can line it with a heavy-duty, food-safe plastic grow bag to insulate the roots and prevent the soil from touching the metal. Otherwise, the best containers for blueberries include:Fabric Grow Bags: Highly recommended by container gardeners as they provide excellent aeration and keep roots cool in warm climates.Large Plastic Containers: Look for food-grade, BPA-free plastics with recycling codes \(2\) or \(5\).Unglazed Terracotta / Ceramic: Breathable materials that prevent waterlogging, though they may dry out quickly in the summer heat.Before committing, you can consult guides on the University of California Agriculture and Natural Resources portal or consult your local LA County Master Gardener Program for specialized container gardening tips for Southern California.
thanks for the explanation. What if one used clay inner pot or liner? Ask bcs folks living in wildfire zones really need to avoid using highly flammable plastic or resin pots within 5 feet of their home.
15 Powder-coated metal is generally not toxic for growing food, provided the coating is food-grade and free of heavy metals like lead. However, it is typically an inappropriate choice for blueberries due to their unique soil requirements.⚠️ Why Powder-Coated Metal is Risky for BlueberriesHigh Soil Acidity: Blueberries require incredibly acidic soil (pH of \(4.5\) to \(5.2\)). Highly acidic environments can cause certain metals to leach more readily, potentially altering the soil chemistry and harming the plant.Temperature Swings: Metal acts as a rapid thermal conductor. In the Los Angeles summer, the metal will absorb heat and cook the delicate, shallow root system of the blueberry bush. In cold snaps, the soil will freeze much faster than in other materials.Nutrient Inactivity: Blueberries require specific ericoid mycorrhizal fungi and iron-rich organic matter (like pine bark and peat moss) to thrive. Metal pots disrupt this environment.💡 Better AlternativesIf you are determined to use your powder-coated pot as an aesthetic "outer" container, you can line it with a heavy-duty, food-safe plastic grow bag to insulate the roots and prevent the soil from touching the metal. Otherwise, the best containers for blueberries include:Fabric Grow Bags: Highly recommended by container gardeners as they provide excellent aeration and keep roots cool in warm climates.Large Plastic Containers: Look for food-grade, BPA-free plastics with recycling codes \(2\) or \(5\).Unglazed Terracotta / Ceramic: Breathable materials that prevent waterlogging, though they may dry out quickly in the summer heat.Before committing, you can consult guides on the University of California Agriculture and Natural Resources portal or consult your local LA County Master Gardener Program for specialized container gardening tips for Southern California.
Look up TGIC. Most powder coatings are loaded with resins that aren't food safe. The ones that are typically are explicitly labeled as TGIC free and rated as non toxic and food safe. They're also typically a lot more expensive due to the cost of the non toxic materials.
I'm going to pass. It looks like you have to assemble it and I would be concerned that the screws would be the weak link in terms of longevity due to rusting. I've purchased similar stick in the ground trellis from HD/Lowe's/Walmart and they were powder coated. The parts that were in contact with the ground rusted and they fell over. This was after about 3 years so arguably that may be ok for this price point. I suppose you could possibly spray the bolts and inside with a rubber sealant to potentially increase lifespan...
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Not suitable for anything edible.
Not suitable for anything edible.
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I looked at some trellises from Lowes I was considering, and they are also powder coated steel but no lead or prop 65 warning on them. I was just double checking if they all have these warnings or not, and clearly there are better options.
Which is a shame because I like this deal and almost bought it anyways.
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Our community has rated this post as helpful. If you agree, why not thank elleooh
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Not suitable for anything edible.
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