Big Green Tractor Goldenray

Overview

• Botanical name: Ligularia BigGreenTractor (PP35810) (syn: L. japonica BigGreenTractor)

• Habit & size: Grows about 3.5ft (1.0m) tall and spreads to ~4.5ft (1.4m) wide at maturity.

• Foliage: Deep green, massive leaves (up to ~16 across) with serrated/dissected margins for strong architectural texture.

• Flowers: In midsummer it sends up tall stems of goldenyellow daisylike flowers above the foliage.

• Hardiness & zones: Rated to USDA Zones 49.

Light & Site Requirements

• Sunlight: Best in part shademorning sun + afternoon shade, or filtered light. Avoid hot afternoon sun, which can cause wilting.

• Soil & moisture: Prefers rich, humusrich, moist but welldrained soil. It tolerates high moisture and even boggy spots, but will struggle if the soil dries out.

• Placement: Because of its size and bold foliage, it works well as a focal or background plant in a shady bed, woodland garden, or near a water feature/rain garden.

Planting & Maintenance

• Planting time: Early spring or early fall works well. Ensure good root contact and water thoroughly at planting.

• Spacing: Allow ~44.5 ft between plants so their large leaves have room to fill out.

• Watering: Keep soil consistently moistdo not let it dry out. In hot weather or more sun, extra watering may be needed.

• Fertilizer: Topdress with compost in spring or apply a light balanced fertilizer if soil is poor. Avoid heavy feeding that might lead to floppy growth.

• Pruning / Deadheading: After flowering, you can cut back the flower stalks to tidy the plant. In late fall clean up dead foliage to reduce overwintering pests and disease.

• Winter care: In colder zones, a light mulch over the root zone can help protect crown from freezethaw heave but ensure soil remains welldrained.

ColdClimate & Zone3 Considerations

• Though this cultivar is rated to Zone4, with proper site selection (moist, shaded, welldrained) it can perform in cold climates if you pick a sheltered spot.

• Choose a location away from full afternoon sun, in soil that doesnt dry out or get waterlogged from snowmelt standing on it.

• Avoid exposed high wind sites, and ensure snow melt drains away rather than pooling at the crown.

• Because of the large leaf size, protect against slug/snail damage early in the season.

Photos from Walters Gardens