A black planter is a decision about contrast rather than about color. Against a pale wall it draws a hard outline; against brick or timber it recedes and the foliage carries the eye. It is the finish most often specified where the architecture is meant to lead and the planting to follow.
The practical question people ask about dark planters is heat, and it is a fair one. A dark surface absorbs more sun than a pale one. What changes the answer here is the material rather than the color: fiberglass does not conduct heat the way metal does, and Jay Scotts' comparison guide states that fiberglass “won't scorch your plants or your hands in the heat, and it will protect your plants from cold temperatures.”
Every black planter on this page is finished to order. That is why the range runs across every shape we sell rather than a handful of stock items, and why the black is consistent from the smallest cube to the longest trough. It is also why they take a few days to make. Related: commercial planters and tall privacy planters. By size and shape: tall black planters, large black planters and black rectangular planters.