She's getting full sun from 7am-1pm. Then sun through tinted pergola till end of day. Could it be a nute related issue?
Is the pargola UV rated ??? If that is the case you my aswell throw it in the oven on same temp.... No UV no grow i thought ??
Try putting it in more sun or build a shade cloth frame of some sort ?? It worked for me... Slightly of center to catch full sun till about 2pm ( except really hot days 30+ )
They will only get morning sun till about 11am, with a quick move.,
Look for green house shade cloth... then hook misters up..... will cool down the temp quickly late arvo and morning.
Yes it could be nutes - to much to little, not some of this not some of that.... What are you feeding??