What is killing my dwarf Alberta spruce?

Most commonly, dwarf Alberta spruce fall victim to spruce spider mites. These tiny yet extremely destructive relatives of spiders can quickly kill a tree. Spruce mites are most active during cooler temperatures, when they feed by sucking the juices out of the needles. They also leave very fine webbing behind.Click to see full answer. People also ask, why is my dwarf Alberta spruce dying?There are several possible causes of browning needles on your dwarf Alberta spruce (Picea glauca ‘Conica’). One is the spruce spider mite. Another possibility is winter damage on that spruce. Evergreens don’t go completely dormant, so a dry autumn, drying wind, and dry soil can cause browning.Similarly, why are my spruce trees turning brown? Spruces can suffer from Rhizosphaera Needle Cast, a fungal disease that causes needles on spruce trees to turn brown and drop, leaving bare branches. It usually starts near the base of the tree and works its way up. You can check for this fungus by looking at the needles with a magnifying glass. Subsequently, question is, how do you get rid of spider mites on dwarf Alberta spruce? Summer Applications Light infestations can be controlled with a frequent strong spray of water. This will knock mites off the Alberta spruce, but probably not kill them. Once new growth has hardened, you can once again spray horticultural oil. In addition, insecticidal soaps or malathion can be used.Do dwarf Alberta spruce drop needles?The dwarf Alberta spruce tree (Picea glauca Conica) is a popular plant but is not without its problems. It is common for homeowners who have been enjoying the plant for a few years to notice, all of a sudden, that their tree is dropping needles (often after they have turned brown or yellow).

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