Hi folks, we have lovely Hebe shrubs under our back patio. Some are in full sunlight, some have half the plant in shade, half in sun. As it gets further in summer more of the plant gets exposed to sun. The ones mostly in shade tend to get yellow leaves which turn brown and drop off or I pull them off. Rather than being a lustrous green in foliage in parts they just look a bit sad. The soil around their roots is very firm. We’ve had plenty of rain recently so I wonder if they’re overwatered, but the soil feels very hard and I can’t tell how wet underneath. They seem to flower very well in Summer and some in full sun are already flowering now, I’d just like the foliage to look healthier. We’re in Reynella, SA.