: Once the plant starts fruiting, switch to a fertilizer higher in phosphorus and potassium to encourage fruit development over leafy growth.
that eventually turn dark brown or black. Leathery, sunken patches on the bottom of the fruit. Secondary mold occasionally moving into the damaged area. Why is it Happening? teenage black toes
Despite the "black" appearance, this isn't usually caused by a fungus or a pest. Instead, it is a caused by a calcium deficiency within the fruit itself. : Once the plant starts fruiting, switch to
: In a pinch, some gardeners use a calcium foliar spray or even crushed Tums (calcium carbonate) worked into the soil for a quick boost. Secondary mold occasionally moving into the damaged area
: Allowing the soil to go from bone-dry to soaking wet is the #1 cause.
: Tomatoes need a pH of around 6.5 to properly absorb calcium.