Forsythia

[Mags22]

My forsythia is 10months old, as well as shorter shoots towards the base it has four shoots about 3' long, can I trim them back to match the other growth?

[Toorak]

Yes, but better to do it in spring after the flowers die. Apparently you will get more flowers then than if you prune in the autumn.

https://www.gardenfocused.co.uk/shrub/forsythia.php

[Atheist]

Forsythia seems very vigorous and will soon be taller than you could imagine now. I always cut back excess wood hard after blooming and it always grows back strongly.

[Chipchopper]

I've alwaysed pruned mine in spring soon after its flowered to good results.