How can I /summon specific types of sapling items?

I'm making a custom map and need to summon different types of saplings.

I've tried this:

/summon Item 8 58 -1005 {Item:{id:sapling,Count:1},PickupDelay:10000,Age:-32768,data:5}

but this just summons regular oak saplings. The data tag at the end doesn't seem to do anything, so I need to know the proper way to change the data value in order to get different types of saplings.

Thanks in advance for any help!

Solution 1:

Item entities doesn't have a data tag, for different metadata use the Damage tag.

/summon Item 8 58 -1005 {Item:{id:sapling,Count:1,Damage:5},PickupDelay:10000,Age:-32768}