Green Giant Arborvitae is the better choice for most Georgia yards over Leyland Cypress because it grows nearly as fast, 3-5 feet per year, while being far more resistant to the bagworm infestations and Seiridium canker that commonly damage or kill Leyland Cypress screens within 10-15 years. Leyland Cypress remains a reasonable choice for large rural properties that want maximum height and can tolerate replacing occasional dead sections.
These two evergreens are the most common privacy screen plants sold in the Southeast, and homeowners frequently assume they're interchangeable because both are fast-growing, columnar, and evergreen. In practice, their long-term reliability in Georgia's climate differs enough that the choice matters.
Full Side-by-Side Comparison
| Trait | Green Giant Arborvitae | Leyland Cypress |
|---|---|---|
| Growth rate | 3-5 ft/year | 3-4 ft/year |
| Mature height | 30-40 ft | 40-60 ft |
| Mature width | 12-18 ft | 15-25 ft |
| Disease resistance | High | Low — prone to canker |
| Bagworm susceptibility | Low | High |
| Wind/ice tolerance | Good | Fair — brittle limbs can break |
| Typical lifespan in GA | 25-40+ years | 15-25 years |
| Soil tolerance | Adapts well to clay | Prefers well-drained soil |
| Best for | Most residential screens | Very large properties, maximum height |
Why Does Leyland Cypress Struggle in Georgia Specifically?
Leyland Cypress is a hybrid that was never bred for disease resistance, and Georgia's combination of high humidity, warm nights, and heavy summer rainfall creates ideal conditions for Seiridium canker and Botryosphaeria canker, both of which cause browning branches that spread and eventually kill entire trees. Once canker infects a Leyland Cypress row, there's no effective treatment — infected sections have to be removed, leaving visible gaps in what was supposed to be a solid privacy wall.
Bagworms are the second major problem: these caterpillars build spindle-shaped bags out of cypress foliage and can defoliate and kill a Leyland Cypress in a single bad season if left untreated, while Green Giant Arborvitae is rarely a preferred host.
Does Green Giant Arborvitae Really Grow Almost as Fast?
Yes — Green Giant Arborvitae's growth rate of 3-5 feet per year is comparable to, and in ideal conditions can exceed, Leyland Cypress's 3-4 feet per year. The meaningful difference isn't speed, it's ceiling: Leyland Cypress ultimately grows taller (40-60 feet vs. 30-40 feet), which matters only for properties that specifically need a very tall windbreak or screen, such as blocking a two-story structure from a distance.
When Does Leyland Cypress Still Make Sense?
- Large rural or estate lots with 20+ feet of planting width available
- Windbreak applications where maximum height matters more than long-term uniformity
- Budget installs where slightly lower per-tree cost matters more than 20-year reliability
Which One Handles Georgia's Storms Better?
Green Giant Arborvitae generally handles Georgia's summer thunderstorms and occasional ice events better than Leyland Cypress, whose branch structure is more prone to splitting under heavy, wet snow or ice loads. Neither tree is particularly wind-fragile once established, but Leyland Cypress's faster, looser growth habit makes it slightly more susceptible to storm damage in older specimens.
Cost Comparison
Leyland Cypress and Green Giant Arborvitae are typically priced similarly at the same container size, so cost is rarely the deciding factor between the two. The real cost difference shows up over time: a Leyland Cypress screen that needs partial replacement after a canker outbreak in year 12 ends up costing more in total than a Green Giant screen that never needed replacing.
Which Should I Plant Along My Property Line?
For a standard residential property line in Gwinnett County with 12-15 feet of planting width, Green Giant Arborvitae is the stronger long-term investment. Reserve Leyland Cypress for situations where maximum height is the priority and the property has room to spare — and be prepared to monitor for bagworm and canker each season regardless of which you choose.
How Do Maintenance Needs Compare Over Time?
Green Giant Arborvitae requires almost no routine maintenance beyond occasional light shaping, since it naturally holds a dense, pyramidal form without shearing. Leyland Cypress also grows into a naturally full shape when young, but as it matures past 20-25 feet, it benefits from periodic monitoring for canker and bagworm activity, since catching an infection early is the only way to limit its spread through a row.
Screening Density Comparison
Both species provide dense, opaque screening once mature, but Green Giant Arborvitae tends to stay fuller from the ground up throughout its life, while older Leyland Cypress rows can develop bare, leggy bottoms as lower branches lose vigor with age — a common complaint from owners of 15+ year old Leyland Cypress screens that no longer block views at eye level the way they did when younger.
What Does Replacement Cost Look Like Over 20 Years?
Because Leyland Cypress carries a meaningfully higher risk of losing individual trees to canker or bagworm within its 15-25 year typical lifespan, homeowners should budget mentally for the possibility of replacing a section of the row at some point, a cost Green Giant Arborvitae owners rarely face. Over a 20-year ownership horizon, that replacement risk often makes Green Giant the lower total-cost option even when the upfront per-tree price is identical.
Not sure which fits your specific yard? BB Blossoms stocks both Green Giant Arborvitae and Leyland Cypress and can walk your property line in person to recommend the right variety, size, and spacing before you buy.