Hi, this is my first year growing maize , crop is about 7ft high , most plants have 2 cobs , some have 3 cobs , was sowed at the end of may , was fertilized with a lot of sludge , is a great healthy crop all year , the cobs are now about 8-10 inches long , grain is still white , will this ripen much more , I know it’s early and it won’t be harvested for at least a month , but how good a crop at this stage can I expect. Thanks .