13a "What leads to colours in fall?. Crown over around New York has northeast eclipsing south" (16)
T?I?H?N?L???H??? Am assuming it's the name of process that gives colour changes in autumn but can't see it.
40d "Bound to harvest green buds" (3,6)
C?T ?A?E?S. CUT CAPERS for bound?
48d "Spider scuttled to end up under article" (7)
A?A?E?D
Any help much appreciated