How far from a window should a Dieffenbachia plant be?

I had one years ago, and it got huge when I moved it away from the window, and put it in a far corner of my dining room, which was about 12 feet from the window. Only thing was that no matter where I put it, the leaves would yellow and fall off except for the very end of the stalk. By the window though, the leaves would actually dry out and fall off, so I am sure whether I was better off or not. Yes, it lived and grew tall, although the stem tended to corkscrew, but the leaves still fell off. Best of luck to you.

I'd give it filtered light with 1:1 mix of full sun and partial shade. Turn the plant frequently for balance.

See if these help you!

https://www.gardeningknowhow.com/houseplants/dumb-cane/growing-dumbcane-dieffenbachia.htm

https://plantcaretoday.com/dieffenbachia-plant-care.html

Mine does best in an East facing room not too close to the window. I am in zone 9 where it gets pretty hot in summer. I keep it out of the draft of the heater or a.c..

Bright light,no sun, it is a caning variety plant so it will always loose the leaves from bottom up. They are tropical so need humidity/misting no drafts(cold or warm/hot) It will grow leaning towards light source so best to turn it quarter turns when top leaves begin to bend towards light source. They need good drainage dry thoroughly between full watering (add water til it runs thru bottom) draining off excess then dry thoroughly again.Keep root bound for more top growth. You can cut off top and retstart for additional plants,bottom will resprout. Most diffenbachia will start additional plants from underground runners which begin to grow when plant is more rootbound.These house plants are toxic(milky sap) to house pets & kids, affects the throat hence the name "dumbcane".

Never put in in direct sun 🌞 it can have bright indirect light 💡 or filtered light 💡 they are very hardy!!!! And can adapt to a lot of different climates

Sorry ment in direct light 💡

I GREW MINE IN THE CORNER OF MY LIVING ROOM. iT WAS IN THE SOUTH=EAST CORNER WITH A BIG WINDOW ON THE EAST AND A BIG WINDOW ON THE SOUTH. iT WAS BEAUTIFUL AND DID NOT LOSE ITS LEAVES. BE SURE YOU WATER IT BUT ONLY WHEN IT FEELS DRY.

VERYONE ADMIRED MY PLANT. OUR HOUSE HAD ONLY A ROOM AIRCONDITIONER IN THE NEXT ROOM SO MAYBE ALL THAT HELPED. Excuse the caps...fingers got misplaced lol