Rhu the Day: The Warm Rhubarb Cake Your Summer Has Been Waiting For

There are desserts that impress, and there are desserts that transport. Our new Warm Rhubarb Cake — baked with fresh local rhubarb compote and crowned with vanilla bean ice cream — is firmly in the second camp. One bite and you’re back in a sunlit kitchen, sometime lovely, sometime long ago.

A Love Letter to the Grumpiest Plant in the Garden

Let’s be honest: rhubarb doesn’t try to charm you. It’s sour enough to make you wince, its leaves are famously off-limits, and it shows up early in the season looking like celery that’s been through something. And yet — ask almost anyone who grew up around a garden in Niagara, and rhubarb is pure nostalgia. A stalk dipped in sugar on the back porch. A grandmother’s crumble cooling on the windowsill. That unmistakable pink-tinged sauce bubbling on the stove in June.

That’s exactly the feeling our bakers set out to capture with this cake. It’s not fussy or over-engineered. It’s warm, saucy, and a little sentimental — the kind of dessert that tastes like a memory, even if it’s your first time trying it.

Why Local Rhubarb Just Tastes Better

Here in Niagara, Ontario — growing zone 6b, for those keeping score — rhubarb is one of the great success stories of the garden. It actually needs our cold winters; a proper chill is what wakes the crowns up and sends those thick, ruby stalks shooting skyward in spring. By early summer, local rhubarb is at its absolute peak: juicy, vibrant, and packed with that bracing tartness that makes it such a brilliant baking ingredient.

Because we use fresh local rhubarb compote, this dessert is a true product of its season and its place. It couldn’t taste like this in January, and it couldn’t taste like this just anywhere. That’s the beauty of eating with the seasons — and it’s why we’d gently suggest not waiting too long to try it.

How to Enjoy It Like a Regular

• Come hungry, but not too hungry — it’s a beautifully generous portion, and you’ll want room to savour every warm, saucy bite.
• Pair it with a coffee or tea — the bistro pours a lovely cup, and a little bitterness alongside all that tangy-sweet is chef’s-kiss territory.
• Don’t rush the melt — give the vanilla bean ice cream thirty seconds to start pooling into the warm cake. Trust us on this one.
• Make it a date — dessert in a greenhouse surrounded by tropical plants is a core memory waiting to happen.

Make a Whole Afternoon of It

The Warm Rhubarb Cake lives at our Vineland location — and if you’ve never been, dessert is just the beginning. Wander the greenhouse, browse the Tropical Garden, and poke through Workshop Village, where our seasonal floral and planting workshops run for every skill level. If you’re planning ahead, our Tropical Garden Tea ($47 per person, seatings Tuesday through Saturday) is a full afternoon of teatime magic right inside the greenhouse.

And do leave time for the Pastry Market on your way out. Everything is baked in-house daily by the same talented team behind this cake — which means the rhubarb love doesn’t have to end when your plate is empty.

Feeling Inspired? Grow Your Own Rhubarb

Rhubarb is one of the most forgiving perennials you can plant in zone 6b — a true plant-it-and-love-it-forever crop. A few pointers from our growers:

• Plant crowns in early spring — as soon as the soil is workable. Rhubarb is hardy well beyond our zone 6b winters, so cold is a friend, not a foe.
• Be patient in year one — let the plant establish without harvesting. Your restraint pays off with decades of stalks.
• Stop harvesting by early July — the plant needs the rest of the season to recharge for next year. (Good news: that’s exactly when you come see us for cake instead.)
• Never eat the leaves — they contain oxalic acid and belong in the compost, not the crumble.