Gadenin日本語Get the app
Phlox paniculata
Growing calendar
Typical timing for central Japan (Kanto region). Shift it for your own climate, and record your actual dates.
Guides
- How to Plant Garden Phlox: Spacing for Airflow, Soil Prep and Planting Depth
- Garden Phlox Care: Thinning the Stems, Watering and Keeping the Heads Big
- Why Is My Garden Phlox Not Flowering? Small Heads, Late Buds and How to Fix Them
- How to Divide and Propagate Garden Phlox, and Why You Must Pull the Seedlings
- Garden Phlox Year Round: What to Do Each Season, from Thinning to Autumn Cleanup
- Powdery Mildew on Garden Phlox: Preventing It, Spotting It Early and What Actually Works
Common problems
Start from what you can see on the plant.
Pests and diseases (9)
Problems recorded for this plant, most serious first.
Powdery Mildew
Disease
White patches appear scattered on the upper leaf surface at first, then the whole leaf is coated in a white powder. Leaves later yellow, brown and die back, and reduced photosynthesis cuts growth and yield.
Brown Leaf Spot
Disease
Small light brown to gray-brown spots form on the leaves and enlarge into irregular lesions. When they merge the whole leaf dies and plant vigor drops sharply.
Southern Blight
Disease
The stem rots at soil level and white silky mycelium spreads over the crown and the surrounding soil surface. Brown sclerotia the size of rapeseed then form and the plant wilts and dies rapidly.
Anthracnose
Disease
Light brown to dark brown round lesions with sharp margins form on leaves and fruit, slightly sunken in the center. In wet weather salmon-pink slimy spore masses ooze out on the lesions.
Root-knot Nematode
Pest
The plant wilts in the daytime and does not recover with feeding or watering. Pull it up and the roots carry beaded chains of galls of varying size with few fine roots.
Leaf Spot
Disease
Small round brown to gray-white lesions appear on the lower leaves, the centers turning gray with tiny black specks. As they multiply the leaf yellows and drops early.
