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If barren rock and wilted Plants are what you want, he's the landscaper for the job.
Strategies
With
Landscaper's ability weakens a plant to either make it pose less of a threat to you, or to stop it from attacking entirely. It can also be used to lower the strength of a plant to 2 or less, thus allowing that plant to be destroyed by Rolling Stone or Weed Spray.
If you are able to lower a plant's strength to 0, it gives you a definite edge on that lane since the plant on it can't do anything, and your opponent is unable to play anything on that lane if they lack plants with Team-Up. This essentially allows you to play set-up zombies such as Template:PvZHLink, Team Mascot, and Aerobics Instructor on the lane with little fear of them being destroyed, unless your opponent either plays tricks to destroy them, buffs the plant's strength back up again, or if the plant's ability can destroy them like Three-Headed Chomper or Briar Rose's.
Play multiple threats to force the opponent to consider which threat needs to have its strength reduced. You can also boost back the plant's strength if you are in the Mega-Grow Mega-Grow or the Kabloom class (or if the strength dropped to zero, use Spineapple if you are in the Guardian) or bounce back the plant using Rescue Radish.
Landscaper on the advertisement for the Neptuna Ally Pack
Trivia
The can he holds in his hand resembles Weed Spray.
If a plant with a temporary strength boost (via Template:PvZHLink, Anti-Hero, etc.) is affected by Landscaper's ability, that plant may end up with negative strength when the boost is removed. This also applies to other strength-decreasing abilities.