The Gentle Giant That Ruled the Prehistoric Shade Garden
Hosta 'Gigantosaurus' is a massive variegated hosta bred by Hans Hansen for Walters Gardens and introduced through the Proven Winners® Shadowland® program. It forms a towering, broadly ovate mound with deeply veined, slightly corrugated leaves that carry a rich blue-green centre edged in wide, creamy margins. The sheer scale of this cultivar earns its name — this is a dinosaur among hostas. It thrives across Canadian hardiness zones 3–9 and commands the back of any shaded border with prehistoric authority.
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Dinosaur-Scale Presence: One of the largest hostas in the Proven Winners® Shadowland® lineup, forming an imposing mound that anchors large woodland gardens and shaded borders.
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Striking Variegation: Deep blue-green centres are framed by wide, creamy white margins, creating bold contrast that holds its drama from spring emergence through autumn.
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Exceptional Leaf Substance: Broadly ovate, deeply veined, and slightly corrugated foliage gives this cultivar outstanding texture and good resistance to slug damage.
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Elegant Floral Display: Pale lavender flowers rise on tall scapes above the mound mid-season, adding a delicate counterpoint to the bold foliage below.
| Feature |
Specification |
| Size |
76.2 cm × 193 cm (30" × 76") |
| Hardiness Zone |
3–9 |
| Colour |
Blue-green centre with wide cream margins |
| Light Requirements |
Partial to full shade |
Grower's Tip: Like its namesake, 'Gigantosaurus' needs space to roam — give it a generous planting area and it will reward you with years of increasingly dramatic growth. Every division is verified in our Bécancour trial fields to confirm the bold variegation and vigour are fully expressed before shipping, honouring our True to Type commitment.
