Experienced gardener

Philippe Lecart
Aménagement et entretien des jardins et des parcs Tervuren
Téléphone 02/7678730
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(personnal recommendation BTW - no connection)
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"I just rented"
Be VERY careful - you could be required to put the garden back into the state it was in when you rented it, at your expense when you move out.
"bring the garden to a state that I can maintain myself" should be the responsibility of the landlord.