When can i start to replanting my garden for next year?

i have a small garden and i have dalias and lillies and a miny rose bush what can i do to move them around cause the dalias have taken over everything can i move them now or do i wait till next year please help cause my dailias are covering the sun from the other plants also should i just put the dalias all by themself for next year if so will this harm my garden at all i need lots of help when i was planting then i just out them anywhere and hope for the best but now it looks like a zoo it out of controll i want to keep my japanese lillies with my other ones now that i seen them grow and know the length of the plant so that next year i can purchase more lilles if so please let me know what to do i am hopeless i tell you hopeless. do i do this now or wait till the flowers have all fallen down and the plant is no longer good all the plants are bulbs or tubers please help and thank you .

When can i start to replanting my garden for next year?
Congratulations on your green thumb!! It sounds like you had great success in your garden. Trust me -- every gardener eventually moves plants around. Now is not the time to move things however. Usually fall is the time to move plants. However, it depends on where you live. In cold winter climates, you will need to dig up and store (in a place like the garage), dalia tubers (the root part). Then you can plant them wherever you want next year.
Reply:after the threat of last frost of the spring.
Reply:Dahlia are a very good back-drop plant, and bloom over a long period. they need a bed with other,smaller , long blooming pernials or annuals. the mini rose would do ok planted in front of the bed.. provide it with rose food/ with fungicide to encourage good growth.. Lilies only bloom once a year so they would be ok interspersed thruout the bed.. Best time to transplant is late fall .. bulbs like blood meal , bone meal, and small servings of epsom salts..The rose food can feed the bulbs also
Reply:Do it early in the day or late at night. make sure the ground were you're moving them to has a bucket of water nearby, and if the ground where they are now has roots all mixed together(which it sounds like they are) keep the ground there wet right after you dig them up and replace a little dirt around the roots of the plants you want to keep there imediately. hope i helped.