Here are some normal Arborvitae diseases and how to fix them: Arborvitae Turning Brown Leaves; If some branch tips are turning brown on your newly planted ‘Green Giants’, it might be because they aren’t getting enough water. Hi there, thanks for the help. D ON’T PANIC: Nothing’s wrong, and they’re not all dying in unison, I promise. This can be remedied through proper pruning. It's quite tolerant of shade, too, so you can plant it just about anywhere and enjoy year-round beauty from this easy care native shrub. Most specimens are 7 to 15 feet in height, occasionally reaching 20 feet. Thuja Green Giant $ 19.95. We recently moved to Lafayette and planted five 6 foot Arborvitaes back in early June. Arborvitae requires evenly moist and rich soil. If most of the bark is gone from the base of the trunk, the tree will have to be replaced. It naturally grows as a tidy little globe of fragrant, fan-like evergreen foliage. The crown is an easy target for harsh wind or sunscald, turning needles brown or purple at the end of winter or beginning of spring. But if arborvitae is planted in an exposed area and subject to a lot of wind, what will result are arborvitae shrubs turning brown. Arborvitaes turning brown - should I worry? The tree has urn-shaped cones about 1/2 inch long that turn reddish brown in fall. When it is starved of irrigation or rainfall, browning is a likely consequence. Dwarf golden arborvitae is a slow-growing, compact shrub that reaches 4 to 6 feet tall and 3 to 5 feet wide. 'Emerald Green' is a semi-dwarf cultivar that has a narrow pyramidal shape. Is this normal from shock of planting? Asked October 12, 2015, 9:18 PM EDT. Tater Tot ® arborvitae is the perfect plant accessory for your landscape - its neat, rounded shape is ideal for sprucing up any space in your yard! For the next 3.5 months, they stayed green and looked healthy. The foliage consists of flat sprays of glossy bright green. Description. Arborvitae also prefers moist air, so when the roots are stressed for water and the ambient humidity is low, the odds of the foliage turning brown … Problem: Frigid winter weather poses a threat to pine and spruce trees, particularly their treetops. Drought Stress. Arborvitae turning brown after planting. Dwarf Burford Holly $ 64.95. Arborvitae turn brown naturally in late fall and winter, and the old foliage drops to make room for new green foliage. Though we commonly call them “evergreens,” conifers such as pine, arborvitae, spruce and Hinoki cypress (above) lighten their load of old needles in late summer and fall, with a show of yellowing or browning that can scare a gardener at first. Irresistibly cute - and useful! Q: I recently had these arborvitae planted and have been noticing some yellowing/browning on them. 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