Newly Planted Japanese Maple Leaves Yellowing — Water Deeply, Not Just Rain

Planted Thursday, Yellow Leaves by Sunday — Rain Isn't Enough

Your waterfall Japanese maple (likely 'Viridis' or similar) yellowing 3 days after planting. Heavy rain last night didn't fix it.

Why Rain Fails New Trees

• Root ball is dense — water runs off, doesn't penetrate.
• Surrounding soil may be dry — roots don't venture out.
• Yellow leaves (not in fall) = water deficit.

Immediate Fix

• Hose-water slowly at base until soil is wet 12–18" deep.
• Mulch 3" (keep off trunk).
• Shade cloth if in full sun — Japanese maples need afternoon shade.

Key Point

Japanese maples are understory trees. If yours is in full sun, move it or shade it. Water deeply twice a week until established.