font size on DateFormatter

Hi ,

I am plotting some date based data (dates/values).

Seems to work ok. The code snippet is below.

But what I am trying to do is set the font size of the (%b)
month labels (Jan,Feb etc) as they are too big for my small graph
and they run into each other ..

ax.xaxis.set_major_formatter( DateFormatter('%Y') )
ax.xaxis.set_major_locator( YearLocator() )
ax.xaxis.set_minor_formatter( DateFormatter('%b'))
ax.xaxis.set_minor_locator( MonthLocator(interval=1) )

ax.plot_date(dates,values, label="My Label",color='g',linestyle='-',marker='.')

Thanks / Frank