Emperor Japanese Maple

Deep crimson foliage that holds its color longer than almost any other Japanese maple — the Emperor is the bold, reliable choice for season-long red.

Emperor Japanese Maple (Acer palmatum 'Emperor I') is a standout upright maple selected specifically for its superior color retention and cold hardiness. The deep crimson-red leaves emerge in spring and hold their rich tone through the heat of summer — a quality that separates it from varieties that fade to bronze-green by July. Growing to a manageable 12–15 feet tall with a naturally upright, vase-shaped habit, it fits comfortably as a front yard focal point, a patio accent, or a refined street tree. It's more cold-hardy and sun-tolerant than many Japanese maples, making it a reliable performer across a wider range of landscapes.

What I love about it

Emperor is the Japanese maple for people who've been disappointed by color fade. The crimson holds. Through spring, through summer heat, right into fall when it intensifies to brilliant scarlet before dropping. The upright habit is naturally tidy — it doesn't sprawl or require constant pruning to look good. It's cold-hardy to Zone 5, handles more sun than most Japanese maples, and grows at a moderate pace that's easy to manage. If you want a Japanese maple that delivers on its promise season after season, Emperor is your tree.

Plant Care Tips

• ☀️ Light: Full sun to part shade — more sun-tolerant than most Japanese maples
• 💧 Water: Water deeply until established; moderate water needs once mature
• 🌡️ Temperature: Hardy to -20°F (Zone 5); improved cold hardiness
• 🪴 Difficulty: Easy — low-maintenance once established
• 🐾 Pet Safety: Non-toxic to cats and dogs
• ✂️ Pruning: Minimal needed; naturally tidy upright form

Plant Specs

• Mature Size: 12–15 ft tall, 8–10 ft wide (upright vase shape)
• Growth Rate: Moderate
• Foliage: Deep crimson-red; holds color through summer; brilliant scarlet fall color
• Form: Upright, vase-shaped
• Growing Zone: 5–8

Bloom bold. Be cheeky.