How do you tell if a plum is ripe? how about a peach/nectarine?

When selecting plums, look for plums that show good color for their variety with a slight firmness, but plums with a little give to the touch are fine too. Avoid plums that are hard or very soft to the touch, poorly colored or if their skin shows any shriveling, bruises or breaks. Plums are best picked mature but not fully ripe.

How do you tell if a plum is ripe? how about a peach/nectarine?
in general, a peach/nectarine is ripe when it smells ripe--im not kidding

just smell it and if it smells like what its supposed to smell like, then its ripe
Reply:You can tell if these fruits are ripe by eating them and passing them through your system...
Reply:for the plum the person above gave a good answer about the hardness... for a peach/nectarine the same goes except you should SMELL it too! if it's a nice sweet smell and the firmness if good (slightly gives but not too much) then bite right in and enjoy... awww now you're making me hungry for a nice juicy peach...