De or het helmbeplanting?

The correct Dutch article is:

de helmbeplanting

Rule Words ending in -ing: almost always de. See the rule

How to use helmbeplanting

the helmbeplantingde helmbeplanting
this helmbeplantingdeze helmbeplanting
that helmbeplantingdie helmbeplanting
our helmbeplantingonze helmbeplanting
your helmbeplantingjouw helmbeplanting
every helmbeplantingelke helmbeplanting
which helmbeplanting?welke helmbeplanting?
a big helmbeplanting / the big helmbeplantingeen grote helmbeplanting, de grote helmbeplanting