European Gardening: Helllppppp....my new 'garden'..., 1 by saya

saya wrote:
We (my son and I) will move into another bigger rental house september first. My son (21) has a authistic disorder so we needed more bedroomspace because that's the place he mostly is. OMG there's so much to do and look how my garden looks here. The house is build in 1907 but has just been renovated...so it's painting and painting...flooring and curtains...bot oooooh my beautifull garden that I leave behind. This garden is 100m2 bigger though. Is anyone familiar with magnolia...the tree right is a magnolia..will it grow big and give rootsuckers all over the garden...? Otherwise it can stay after hard pruning.
Please...some words of comfort and couragement...
Philomel how did you do this ?