IF & EDATE Formula together for an End Date but how to ignore text in start date cell

I have =IF(K4="","",(EDATE(K4,6))) to keep my cells blank untill I enter the start date, I now recently needed to add text along with the start date and cant have a seperate start date column because the file already has so much data were trying to make it smaller. Is there anyway to change the above formula to only recognize the date in the column? or maybe a different formula all together?

try

=IF(ISNUMBER(K4),EDATE(K4,6),"")

"In Training 9/24/2013" Is how the start date cell will look if that helps. Thanks for quick reply but still no cigar.

OK, I see now..

Try

=IF(K4="","",EDATE(TRIM(RIGHT(SUBSTITUTE(K4," ",REPT(" ",LEN(K4))),LEN(K4))),6))

Jonmo1 that hit it right on the nail thank you so much!

You're welcome.