Never touching the irrigation controller after handover
A garden running its winter schedule in July is being underwatered by half; a summer schedule left running in January drowns roots and breeds fungus. The controller schedule should change at least four times a year. If you do not know how yours works, have a technician walk you through it once — it is a ten-minute lesson.
Letting crews over-trim your palms
The carved 'pineapple' look, where healthy green fronds are stripped away, weakens palms, reduces fruit and invites pests. Green fronds are the tree's engine. Instruct any crew to remove only brown and dying fronds and never to cut above the horizontal line of the crown, and be suspicious of anyone who argues.
Laying new turf straight onto old ground
Paspalum rolls dropped onto compacted, salty or debris-filled ground will green up for a fortnight and then fail in patches. Proper re-turfing includes stripping the old surface, adding a layer of clean sweet soil, levelling, and verifying sprinkler coverage before the first roll goes down. If a quote does not mention soil preparation, it is a quote for a temporary lawn.