Blumenbengel -

People use a Blumenbengel as a (squeezing the plant in). You should use it as a railing (holding the plant up).

Tame the Jungle: A Practical Guide to Using a Blumenbengel (Plant Support Cage) blumenbengel

Enter the (German for "flower rascal" or "plant hooligan"). Don’t let the playful name fool you—this is the most effective tool for corralling unruly houseplants without turning your living room into a construction site of stakes and zip ties. People use a Blumenbengel as a (squeezing the plant in)