Deutzia White Leaves: Iron Chlorosis from Water, Not pH

Symptoms

12-year-old Deutzia, rejuvenation-pruned 3 years. New growth on tallest branches has white leaves with green veins (interveinal chlorosis). Texture normal, not powdery. Not all branches affected.

Diagnosis: Iron Unavailability from Wet Soil

Iron deficiency shows on newest growth first. In this case, likely triggered by excess soil moisture (wet spring, heavy mulch, poor drainage)—not high pH. Iron becomes insoluble in waterlogged soil. Confined to recent growth = recent event.

Follow-Up: Limestone Chippings Found

Homeowner discovered a pile of limestone rock chippings 2 feet away on patio for several months. This could raise pH locally via leaching, but water is the more common culprit.

Action Plan

1. Test soil pH at root zone. If >7.0, apply elemental sulfur.
2. Remove limestone pile.
3. Improve drainage: Ensure no mulch volcano, check downspouts, grade away.
4. If chlorosis spreads: Foliar spray with chelated iron (Fe-EDDHA) for quick green-up.
5. Trim affected tips for appearance once corrected.

Outlook

Once cause fixed, new growth will be normal. Existing white leaves won't re-green but will be masked by new foliage. Flowering unlikely affected if corrected promptly.