Spider mites thrive in warm & dry conditions .... making the area where your plants are less warm and not as dry ...or, cooler & more on the humid side will deter spider mites
spider mites have a life cycle of 5 stages ...usually, all 5 stages coexist at the same time, making control necessary for each stage
if it is too cool for the plant being outside ...spray with neem oil
if warm enough to stay outside ...spray with insecticidal soap - when insecticidal soap has dried (may look powdery white) ...wash off plants ....do not spray insecticidal soap on hot sunny days -
not sure what is up with the color changes on leaves .... yellow is normal - yellow & falling off plant is normal - brown can be lack of water or too much water ...the red colors might be insecticide
buds dry and aborting can be lack of water or too much water - might also signify recent changes ...or it might just be too early .....
try not to throw too much at adeniums at once ..... since adeniums are notoriously slow to respond to single changes .... making it hard to sort out issues
