De or het plantageholding?

The correct Dutch article is:

de plantageholding

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

How to use plantageholding

the plantageholdingde plantageholding
this plantageholdingdeze plantageholding
that plantageholdingdie plantageholding
our plantageholdingonze plantageholding
your plantageholdingjouw plantageholding
every plantageholdingelke plantageholding
which plantageholding?welke plantageholding?
a big plantageholding / the big plantageholdingeen grote plantageholding, de grote plantageholding