Nurseries often use black pots for several reasons. One reason is that the black color absorbs sunlight, which can help to heat up the soil inside the pot and promote plant growth. This is especially useful in cooler climates or during the early spring when soil temperatures may be low. Another reason is that the black color absorbs heat, which can help to prevent the soil inside the pot from drying out too quickly. This can be especially helpful in hot, dry conditions where the soil tends to dry out quickly. Additionally, black pots can help to reduce the amount of algae growth on the surface of the soil, which can be unsightly and potentially harmful to plants.
It is worth noting that while black pots can be beneficial for certain types of plants, they may not be suitable for all plants. In warm or sunny conditions, the black color can absorb too much heat and cause the soil inside the pot to become too hot for some types of plants. In these cases, it may be better to use pots with a lighter color or reflective material to help regulate the temperature inside the pot.
