From March through September, during wet conditions, the pycnidia release brown spores.

Jun 22, High temperatures can result in heat stress for your trees. This causes leaves to turn yellow and then drop, as trees are water-stressed and cannot provide or maintain the energy needs of their leaves.

Needle rust needs two different host plants to complete its life cycle.

Early identification and treatment of heat stress go a long way toward helping them treegrinding.barted Reading Time: 8 mins. Dec 08, Freeze Damage: If your tree is dropping needles or yellowing/browning uniformly around the entire plant, there’s a chance the recent deep freeze caused such a shock to your tree that the needles were damaged. Extended periods of warm weather followed by rapid temperature drops is the perfect formula for evergreen freeze treegrinding.barted Reading Time: 5 mins.

Nov 02, Yellowing at the tips may indicate the tree is suffering from sun scald, freeze damage or a possible pest attack.

This is totally normal and you should not be alarmed.

This is a natural process and usually only persists for a month or two. Sun scald occurs when extremely dry winter wind combines with low soil moisture and intense sun causes the needles to dry treegrinding.barted Reading Time: 4 mins. Nov 14, Atherton tree pruning ordinance trees in home landscapes benefit from a yearly application of fertilizer. A tree that is lacking nitrogen may have yellowish treegrinding.barted Reading Time: 7 mins.