When's the best time to fertilize and transplant a Lillac bush?

I live in Vancouver BC, spring starts early here, and I'd like to know when i should add organic fertilizer to the garden bed, as well as other plants.

I also have a very big Lillac bush i want to move, but i don't want to shock it either by moving it when it's not the right time.

Thirdly 😉 I have a pear tree, in its 3rd year, last year it was swarmed by aphids…just way too many, and this year i want to spray it, but not with toxic chemicals. I heard you can spray some wax ? Any ideas?

Any gardening tips would be helpful, i'm only good at digging so far 😉 Many thanks.

After it flowers move it. Fall/Winter

Fertilize it

Fruit Tree organic dormant oil
dish washing detergent vegetable oil 1/8 cop each to one gallon water. Mix well spray on branches and trunk