In your PDF settings, under Marks and Bleeds, there are check boxes for Crop Marks and Bleed Marks.
Crop Marks will match the document size; Bleed Marks will match the bleed.
In the Export Adobe PDF dialogue panel, tick Crop marks and under the Marks and Bleeds tab, tick Use Document Bleed Settings.
In truth, Adobe's default offset for crop marks is a little small, putting the default marks slightly into the standard .125" bleed. No printers marks should ever impinge on the bleed area at all -- they should always be completely off any part of the sheet that might end up in the trimmed document (bleed is there to allow for cutting errors), so having the crops outside the bleed area is actually correct.
In the marks and bleeds section of the dialog you can set a mark length and offset that you find usable.