Hedge trimmed, but should still keep cows out

One edge of the allotment now has a freshly cut hedge. I can only reach the inside edge and up to about 1,80m (6 ft). In principle I have to keep it to 1,70m but despite my efforts, that whole edge has gone crazy and is about 4,00m high now. I have no idea what to do about that - maybe if I just ignore the problem, it will go away ...

Meanwhile, the sunflowers are really enjoying the hot dry weather. They are around 2,00m and most have three or four flowers. The bumble bees are enjoying them.