Not even remotely. But I was given a plant with a couple of leaves on that looked very sorry for itself when I started working at this hospital by my then manager who just wanted to get rid of. Amazingly it is still alive to this day and actually looking ok... I need to take a picture of it and put it on here though, I've no idea what it is and I have this notion that it needs to be re-potted or somthing...It's the only plant I've never not killed and I'd like it to stay that way.
I have watered the man hostages mums garden before and thought I did rather a good job.
I water my pots and hanging baskets twice a day (bloody nightmare) even if its rained on them, they don't get enough water. When you water, always aim right at the root of the plant not sprinkle on the actual plant.
JJ when I lived along the coast from you, we had to be careful that we bought plants which didn't mind the salt and the wind. It was quite different from where I am now in Kent, where we have oleanders and ferns and palms - still coastal but a different climate. We did well in Brighton with pot hydrangeas, daisies, poppies, little shrubs. You dio have to feed and wate 'em though, and yes, talk to them, encourage them!
As others have said they need simply loads of water and twice a day in the summer. Cramming them together will help to retain the moisture and create a micro climate. And yes plants are fussy about salty air.