How do I control brown rot and aphids in plum?

The brown fuzzy rot on fruit is brown rot, a fungal disease that attacks blossoms and ripening fruit, especially in warm humid weather and on injured or insect-damaged fruit. Manage it with orchard sanitation, removing and destroying mummified rotten fruit and infected twigs (they carry the fungus to next year), pruning for good airflow, avoiding fruit injury, and recommended preventive fungicide sprays at bloom and again as fruit nears ripening, observing the pre-harvest interval since the fruit is eaten fresh. Quick cooling after harvest also slows rot. The curled shoots with aphids are plum aphids; control them with a dormant oil spray to kill overwintering eggs, encourage natural predators like ladybird beetles, and use a recommended insecticide only if populations are high, at label dose and with the correct pre-harvest interval. Reducing aphid and other insect damage also lowers brown rot because wounds are entry points. Sanitation plus well-timed sprays handles both.