Japanese Iris Dinner Plate Tub Tim Grob

Iris ensata ‘Dinner Plate Tub Tim Grob’ is a breathtaking Japanese iris variety that delights with its large, double-layered blooms of soft lavender and pale purple tones. The delicate flowers, adorned with faint veining and a subtle yellow centre, evoke elegance and serenity, making this variety a standout feature in any garden. Ideal for moist borders, water garden edges, or ponds, this iris thrives in wetter soils, creating a tranquil atmosphere wherever it is planted.

Reaching heights of 90–120 cm, this stately iris stands tall with its slender green foliage, forming a lush backdrop to the exquisite flowers. Blooming in early to mid-summer, ‘Tub Tim Grob’ is a long-lasting and low-maintenance option, perfect for formal garden settings or naturalised designs. Its striking appearance and ability to tolerate moist conditions make it an essential choice for gardeners looking to elevate their outdoor space with beauty and charm.

Key Features

• Height and Spread: Grows to 90–120 cm tall and spreads 40–60 cm.
• Foliage: Upright, sword-shaped green leaves, adding texture and verticality.
• Blooming Period: Early to mid-summer, showcasing large, double-layered lavender flowers.
• Adaptability: Prefers consistently moist to wet soils and thrives in full sun to partial shade.
• Notable Traits: Perfect for water gardens, pond edges, or rain gardens; a low-maintenance perennial with elegant appeal.

Planting and Care Tips

• Plant rhizomes just below the soil surface in moist, nutrient-rich conditions.
• Space plants 30–45 cm apart for adequate air circulation and healthy growth.
• Position in full sun to partial shade for optimal flowering.
• Keep the soil consistently moist, especially during dry periods, to support vigorous growth.
• Deadhead spent blooms to encourage neatness and extend the flowering display.
• Divide clumps every 3–4 years in late summer to maintain health and prevent overcrowding.
  

Botanical name: Iris ensata ‘Dinner Plate Tub Tim Grob’
Common name: Japanese Iris
Plants per square metre: 10
Sunlight: Full sun to partial shade
Height: Up to 90 - 120cm 
Fragrance: Not fragrant
Blooming time: Mid to late summer (June to July)
Pollinator-friendly: Yes, attracts bees and butterflies
Soil requirements: Moist, well-drained, acidic to neutral soil
Watering needs: Requires consistent moisture; thrives near water features
Spacing: 45–60 cm apart
Winter hardiness: Hardy in UK climates with proper mulching in colder areas