This home owner is keeping her newly planted cedars (Thuja occidentalis 'Smaragd') well watered. Since the cedars were leaning a little bit she built a new trellis around them for protection. Full marks for effort and caring.
Unfortunately, the wooden structure is a source of shading which will most likely lead to browning. Any shading related browning over six months becomes permanent. Cedars, like most plants, require sunlight. Keep this in mind.
1) New cedars are thirsty in their first season.
2) Avoid shading at all cost.
Vas Sladek, B.Sc., CLT