It is unclear whether this small heat gain has a significant effect on the rate of their growth.
For example, some window coverings are used to control solar heat gain and glare.
"the net heat gain to the room is 160watts (250-90) for an input of 70 watts"
If replacing the windows is not possible, solar heat gain can be reduced by using shades.
Slow down of heat gain in the day and heat loss at night also achieved by the high mass wall.
This exploitation of passive heat gain has been employed for millennia.
In the hot season, solar radiation predominates as the source of heat gain.
They are correctly positioned so as to make the best use of the sun and to reduce the amount of heat gain.
Generally, the vents to the interior are closed in summer months when heat gain is not wanted.
It still maintains the incredible heat gain and money loss though.