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How does concrete’s composition affect drainage in flower pots?
Concrete’s composition plays a crucial role in determining how well flower pots drain excess water, directly impacting plant health. Traditional concrete is dense and non-porous, often leading to poor drainage and waterlogged roots. However, modern mixes incorporating materials like perlite, vermiculite, or lightweight aggregates can enhance porosity, allowing better water flow.
The ratio of cement to aggregate also matters—higher aggregate content creates more air pockets, improving drainage. Conversely, too much cement can block pores, trapping moisture. For gardeners, choosing porous concrete or adding drainage holes is essential to prevent root rot and ensure healthy plant growth.
Additionally, concrete’s alkalinity may affect soil pH over time, requiring monitoring for sensitive plants. By understanding these factors, you can select or modify concrete pots to create an ideal environment for your plants.
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