Half a day in Longwood Gardens

Hi,

We are visiting Longwood Gardens this Sat. Will be there from noon till closing time. We are a group of 4 adults and 3 girls (5yrs, 4yrs, 1 yr). Looking for some help to plan the visit..

From the reviews the Conservatory seems to be a must-do. But every other spot is also praised in several reviews, so having a hard time prioratizing..

will appreciate pointers. Thanks in advance.