The Beauty of Dinner Plate Hibiscus

By Ava Green

The big, bold, showy, dinner-plate-sized flowers on hardy Hibiscus (Hibiscus moscheutos, also known as Swamp Rose-Mallow) are unforgettable, to say the least.  What a surprise it is to discover that this perennial plant not only survives our Zone 6, Southern Ontario climate, but thrives here! And despite its dramatic, exotic look, this plant is genuinely easy to grow. 

What Hardy Hibiscus Loves

Hardy hibiscus thrives in full sun with moist, well-drained soil and produces huge, gorgeous flowers without spreading and becoming invasive. As a rule of thumb: more sun means more blooms.

Give it ample space as it can grow 4-7 feet tall depending on the variety. Plant it 2-3 feet apart in a border, rain garden, meadow, or beside a fence, stream or pond, and it will thrive there for many years. Because it prefers consistently moist soil, avoid planting it near a brick wall or a driveway as these areas tend to dry out quickly.

When transplanting, add compost into the hole, and keep the base of the stem level with the surrounding soil. Don't mound soil or mulch up around the stems. If you’re planting your hibiscus in the fall, aim to do it at least 6 weeks before the ground freezes so the roots have time to settle in. 

If you'd like a bushier, more compact shrub, you can cut these plants back by half in June.

One thing to keep in mind: hardy hibiscus is very slow to start in spring. Don’t be alarmed if it doesn’t show new growth until the soil warms to around 21º Celsius.

What We Love About Hardy Hibiscus

If everything mentioned above isn’t enough to entice you, there’s more! 

Their enormous, ruffled flowers can reach a full foot in diameter, growing on sturdy, woody stems that stay upright on their own; no staking required. While they resemble their tropical hibiscus relatives, or Rose of Sharon (Hibiscus syriacus), hardy hibiscus produces noticeably larger blooms. They flower mid to late summer in dreamy shades of white, pink, and red.

Seeing Is Believing

Stop by Eising Garden Centre and see the stunning beauty of hardy hibiscus in person. You just might fall in love too!

Staff Picks to Brighten Your Garden

By Ava Green

If I asked you to name a yellow perennial flower, you might immediately think of Black-eyed Susans. They’re definitely a perennial favourite!

The goal of this article is to introduce you to other yellow plants that we love and think you will too!  These perennials come back reliably every year, and look sunny and gorgeous.

Some of these plants also come in other colours, but today we’re sharing yellow varieties.

Coreopsis

Also known as Tickseed, these versatile, native North American plants come in a wide range of yellow shades, from pale and subdued to bright and showy. They also come in various heights to suit a wide range of garden locations.

Best for: Well-drained, average soil. Coreopsis will become floppy or die in moist, fertile, or cool locations. They are tolerant of poor soil and drought | Sun: Full sun | Mature size: 1-2 ft. tall and wide; however, Tall Coreopsis can reach 5-9 ft. tall and 3-6 ft. wide

False Sunflower, Heliopsis helianthoides

False Sunflower checks a lot of wish-list boxes: radiant, long-blooming, heat-tolerant, loved by bees and butterflies, and an exceptionally hardy native perennial here in Zone 6 Southern Ontario. To keep these tall plants shorter, stronger and bushier, cut back new growth by half in May and divide them every three years so they don’t become too dense.

Best for: Moist, well-drained areas with lots of space to grow | Sun: Full sun, tolerates part shade | Mature size: 3-6 ft  tall × 2-3 ft wide

Torch Flower, Kniphofia

Also known as Torch Lilies or Red Hot Poker, this unusual, striking plant is a stop-and-take-notice focal point in any border, providing weeks of continuous colour throughout summer. It’s also a magnet for plenty of pollinators.

Best for: Areas with very good drainage, as wet soil can cause root rot | Sun: Full sun | Mature size: 3-3.5 ft. tall × 2-2.5 ft. wide

Hosta

Hostas provide season-long colour, with their sturdy foliage doing most of the work. While many varieties have green or blue-green leaves, some offer very pretty yellow foliage instead. Give them 2-4 hours of morning sun each day and an inch of water each week, and that bright yellow colour will stay vivid all season. Flowers are often the main selling point for perennials, but hosta foliage proves that structure, not just blooms, can be just as valuable in a garden.

Best for: Areas with morning sun, which helps to intensify their colour | Sun: Part sun, preferably morning | Mature size: 6 in. to 3 ft. tall × 10 in. to 6 ft. wide depending on the variety (miniature cultivars stay toward the smaller end of that range)

Ligularia

Ligularia are unforgettable, with their large “tractor seat” leaves and tall spikes of candelabra-like flowers. They're a little more finicky about location, though; they need plenty of moisture and abundant morning sun, but must be protected from hot afternoon sun to truly thrive. Give them the right conditions, and this dramatic, bold plant will command all of the attention in your garden.

Best for: A woodland garden, rain garden, the edge of a pond or stream, in a swamp or bog where there is consistent moisture | Sun: Full sun where there is lots of moisture, otherwise Light or Partial shade with morning sun only | Mature size: 1-6 ft. tall × 1.5-4 ft. wide

More Yellow Perennials Worth Considering

Stop by Eising Garden Centre and chat with Mary or Donna; they’re always happy to help you find your favourite yellow perennials. Here are a more to check out:

Black-Eyed Susan (Rudbeckia), Stonecrop (Sedum ‘Yellow Brick Road’), Shasta Daisy (Leucanthemum ‘Banana Cream), Hardy Hibiscus (Hibiscus ‘French Vanilla’), Daylily (Hemerocallis ‘Hyperion’, ‘Happy Returns’, ‘Yellowstone’, ‘Going Bananas’ and ‘Stella D’oro’), Lenten Rose (Helleborus ‘Spanish Flare’, Coneflower (Echinacea ‘Yellow My Darling’), False Indigo (Baptisia ‘Lemon Meringue’ and ‘American Goldfinch’), Yarrow (Achillea ‘Firefly Sunshine’, ‘Moonshine’, ‘Coronation Gold’, and ‘Firefly Sunshine’), Cup Plant (Silphium perfoliatum), Hollyhock (Alcea), Helenium (‘Hay Day’, Dakota Gold’ and ‘Sombrero’, Itoh Peony (‘Yellow Emperor’, ‘Bartzella’, and ‘Garden Treasure’), Butterfly Weed (Asclepias tuberosa), Foxglove (Digitalis), Columbine (Yellow Queen), Eastern Prickly Pear Cactus (Opuntia cespitosa or Opuntia humifusa - native cactus), and Japanese Forest Grass (‘All Gold’).

That’s a lot of yellow, and as the saying goes: where yellow blooms, happiness follows!

In this case, the plants Hens and Chicks, not the feathery friends.

Sempervivum, also known as Hens and Chicks or Houseleek, are a group of succulents that are becoming very popular in Southern Ontario. Here’s why these cold hardy perennial plants are gaining attention.

Low-maintenance

Low-maintenance is the item on everyone’s checklist, right? Hens and Chicks are known for being no-fuss. Sempervivum require very little soil, fertilizer or water. They’re sun-loving, hardy, resilient, and drought-tolerant. When you don’t have a lot of time to garden, you’ll be grateful that your Hens and Chicks need minimal care once they become established.

Versatile, and Did We Mention Low-maintenance?

Sempervivum will grow in full sun to partial shade, and average to poor soil as long as they have good drainage. They will manage just fine in poor soil and harsh conditions like heat and cold! This makes Hens and Chicks the perfect candidate for that spot in the garden where nothing else wants to grow. The spot that’s too hot, or too windy, the soil is rocky or gritty and not ideal or it’s eroding, like on a slope.

These rugged warriors can be grown on rooftops, ledges, walls, in rock gardens, hanging baskets, troughs and containers. Just make sure there are drainage holes. Too much water is their only enemy and will result in their roots rotting.

Chick Charms

While most Hens and Chicks are low-growing, 8-15 cm tall, they will all spread 30 cm and more - as much as you like, really. This is because they produce small plants, known as “chicks” or offsets around the main plant. The “Chick Charms”. Chicks can also be transplanted to start a whole new plant.

Tough and Beautiful

As a ground cover, Sempervivum can add visual interest and contrast to a border of annuals or perennials.

While they’re known for their pretty rosette-shaped clusters of foliage, you may not realize that Hens and Chicks also come in a variety of colours, and produce stunning blooms in summer.

Once a plant blooms, deadhead the flower and pull up the soft parent plant with it. The plant dies when it blooms, but new chicks will grow and replace it.

Hens and Chicks fleshy leaves make them less attractive to many garden pests and they are generally resistant to diseases. Tough plants for sure, and worthy of a spot in the garden. The next time you’re in Eising Garden Centre, we recommend that you peruse the Sempervivum section here in Simcoe and give these outstanding succulents a try!