The Queen of the Classic Garden Border

By Ava Green

Tall, stately, and undeniably dramatic, the Delphinium or Larkspur is one of those perennial plants that stops people in their tracks. When given the right conditions, its towering floral spikes are magnificent. For gardeners who love a classic English border, nothing else compares. Yes, Delphiniums have lots of preferences, but tend to them, and they will reward you with a floral display that makes every bit of effort worthwhile. 

Choosing Your Delphiniums

With a wide number of varieties to choose from, there’s one that’s sure to fit every garden. Heights range from a modest 36 inches to an impressive 72 inches tall (Yes, 6 feet!), with a spread of 24 to 36 inches depending on the variety. So whether you have a compact border or a large sweeping bed, there’s a Delphinium to suit your space.

Their colour palette is equally diverse: rich blues and purples, soft pinks, crisp whites, and beautiful bicolours. Few flowers offer such a wide range. 

Planting

While Delphiniums prefer abundant moisture, be sure to plant the crown of the plant (where the stems meet the root ball) at soil level to avoid crown rot. Planting them too deeply is the most common way to lose these plants.

Spring and Fall are the ideal times to plant, giving roots a chance to establish themselves in cooler, more forgiving conditions. That said, a cool, overcast summer day works well too, just avoid planting during hot or humid spells. Spacing will depend on the variety you choose, so check the tag and give each plant the room it needs to breathe.  

Growing

Delphiniums are what gardeners affectionately call “Goldilocks plants”, they like things just right. Full sun, protection from strong winds, and fertile, humus-rich soil with excellent drainage are keys to success. They also love manure mixed into the soil to enrich their growing conditions. 

Their height is both their greatest asset and vulnerability. Because Delphinium flower stalks have hollow centres, they break easily if they’re exposed to the wind. Planting them in a sheltered spot is genuinely important. Once plants reach about 12 inches tall, stake each flower spike individually, or place a tomato cage around a clump early in the season before it’s needed. It’s much easier to stake proactively than to rescue a snapped stem after the fact.

Delphiniums are hungry plants and will perform best when fed generously. A dose of fertilizer, compost, or well-rotted manure in both spring and summer keeps them healthy and productive throughout the season.

Finally, don’t overlook dividing. Each spring, simply dig up the plant and cut the root ball in half. Now you have two plants for your border, or one to keep and one to share!

The Show

All that care pays off in late spring and early summer, when Delphiniums put on one of the most spectacular displays in the garden. Tall, densely packed spikes covered in richly coloured blooms rise above the border like beacons. Bold, beautiful, and completely unforgettable. 

Once the first flush of flowers begins to fade, and before the blooms turn to seed pods, cut the spent spikes back to just above the foliage. This encourages the plant to produce a second, smaller flush of blooms later in the season and extends the show! As the old foliage fades, trim it away to allow the fresh new growth to replace it.

Inspiration

There are plants you fit into a garden, and then there are plants you plan a garden around. Delphiniums belong firmly in the second category. Their height, colour, and presence make them one of the most inspiring and rewarding perennials a gardener can grow.

Stop by Eising Garden Centre to see what Delphinium varieties we have available this season. Our team is always happy to help you find the right fit for your garden and set you up for success. 

By Dave Zeldon and Ely Schweyer

This is a question we hear daily during the spring, summer and, especially, the fall. Unfortunately, many homeowners do not see any adverse changes occurring in their trees until they look dead, or nearly so.

You Might Not Need to Panic Yet

The discolouration and dropping of evergreen needles are a natural phenomenon and the main cause of needle loss in the wild. Evergreen needles, as the name implies, survive for a lengthy period, and in fact usually have a life span of five to seven years on healthy trees, however, they must be shed. The needles first start to die in the central and lower part of the tree, and this change progresses upward over time. You will see spruce trees naturally lose needles as they get older.

   Age is an important factor here in causing needle loss and branch death, however, in landscape plantings of coniferous evergreen trees, pests and disease are likely the major cause of needle loss and dying branches. If there is a sudden fall of a very large number of brown needles and leaves, this signals to us that there is something drastically wrong!

   This can happen as early as a year or two after a tree is planted. This is especially true in Haldimand and Eastern Norfolk County where heavy clay soils predominate. Spruce trees, for example, do not grow well on clay soils.

When You DO Need to Worry

Here are some of the more common problems, apart from natural aging that afflict spruce trees, the probable causes and ways of treating the problem.

☝️Unfortunately, these majestic trees, the most popular evergreen planted on our residential properties, incur many other pest and disease problems not dealt with here.

Symptom: Rusty brown needles that eventually fall.

Likely causes:

1. Internal fungus disease (called Cytospora or white blister canker). This creates cracks in the bark causing resin to drip and leave grey-white dripping streaks on the bark. The fungus also causes open wounds or blisters on tops of branches. These wounds can be greyish white or greyish blue in colour, eventually turning brown and black.

2. Feeding by spider mites which leave fine, poorly formed webs in the needles, especially near the ends of the twigs.

Best treatments:

1. Properly aerate and fertilize tree out to a distance of half its height in all directions, where possible.

2. Pressure wash thoroughly once a month with water only, all needles and branches as high as possible on the tree. Water pressure dislodges spider mites.

Symptom: Chewed up ends of twigs in June.

Likely cause:

Spruce bud worms which develop in the needle cluster that arises from a bud.

Best treatment:

Spray the biological pesticide, BTK (eg. Dipel), onto the entire tree when feeding is first noticed in early spring, to kill the young caterpillars.

Symptom: Black sooty mold covering twigs and needles.

Likely causes:

1. Spruce bud scales, ball-shaped insects, initially light brown in colour but eventually turning black. Often two to five scale balls cluster in one location on the twig; honey dew excretions from scales become infected with sooty mold.

2. An overhanging shade tree such as oak, maple or elm may have heavily infested leaves with aphids whose honey dew secretions become infected with sooty mold.

Best treatment:

1. Pressure wash tree using water only to dislodge young scales (called nymphs) in May and early June while they are in the crawling stage. Scale nymphs fall to the ground where they cease to be a threat to the tree.

2. Spray shade tree in early spring with insecticidal soap to control aphids. The problems of other coniferous evergreens such as pines, firs, cedars and junipers can usually be treated with correct diagnosis, though some diseases are lethal.

We hope these help you troubleshoot common issues often found in evergreen trees! For more information - and evergreens – visit Eising Greenhouse and Garden Centre! 🌲

A well-chosen hedge can do a lot more than just look great—it can give you privacy, act as a windbreak, define garden spaces, reduce noise, or add year-round greenery. Whether you're looking to block out a view, frame your garden, or just create a lush backdrop, hedges are incredibly versatile.

One of the most underappreciated roles of a hedge? It makes everything in front of it—flowers, trees, garden art—look even better. Think of it as a green stage curtain that lets your garden stars shine.

Pretty much any shrub planted in a row can create a hedge, but the right plant depends on what you want it to do. Here are some of our top picks.

Evergreen Hedges - The Classic Green Wall

Cedar 

Cedar is a favourite for a reason. With its dense, year-round green foliage and low-maintenance nature, it's ideal for privacy. Depending on the type, cedars can grow between 9–14 feet tall, forming a living wall that blocks wind, noise, and prying eyes. It also makes a lovely backdrop for all your other plants.

Inkberry Holly

Looking for a Boxwood alternative? Inkberry Holly is a great choice—especially if you're concerned about Boxwood Blight. This broadleaf evergreen keeps its dark, glossy green leaves all year and can grow up to 8 feet tall if left unpruned. It loves full sun, wet soil, and even acidic conditions. You can trim it to keep it neat or let it grow naturally—either way, it makes a fantastic border or garden divider.

Yew

With dense, dark green foliage that stays lush all year-round, Yews make excellent hedges for privacy, property lines, and garden backdrops. They’re incredibly versatile—leave them to grow naturally for a softer look or trim regularly for a crisp, formal shape. Yews respond beautifully to pruning, creating a smooth, tailored finish. Just be sure to wear gloves when handling them, and plant them away from children, pets and livestock, as all parts of this striking plant are toxic.

Deciduous Hedges with Drama and Colour

Bridalwreath Spirea 

Graceful, arching branches that are completely covered in double-white blooms in the Spring make Bridalwreath Spirea a truly stunning hedge plant in the spring. After its spring show, small, glossy green leaves cover this plant until the fall, when its leaves take on beautiful autumn colours.

Bridalwreath Spirea grows to a mature height of 4-9 feet, can tolerate light shade as well as a variety of soil conditions and can be lightly pruned to shape. They are also deer-resistant.

Peking Cotoneaster

Peking Cotoneaster may not be flashy, but there are lots of reasons to love this shrub. Its smooth, dark green leaves create a clean, structured look that works beautifully behind flowering plants or along fences. In fall, the leaves turn a fiery red, and black berries appear, which birds snack on through the winter. Growing 5–7 feet tall, this shrub is also a great choice for wind protection and bird habitat.

Still not sure which plants to choose for your hedge? Stop in to see us at Eising Garden Centre and talk to one of our tree and shrub specialists - Zach, Sandy and Donna, or contact one of our landscape design specialists, Emily or Lucas. We’re here to help!

If you think a small space and a small garden are limiting when it comes to shrub choices, think again! Colour and texture, structure and seasonal interest are all available in many small shrubs. Whether you’re looking for beautiful blooms or evergreen foliage, you’ll love what our favourite small shrubs have to offer!

Follow the 5 links for more on our 5 favourites!

My Monet Purple Effect Weigela - Weigela florida

A deciduous shrub that’s deer resistant, colourful and low growing. This plant checks lots of boxes!! Variegated mint green and cream foliage with purple tones and pink blossoms, it makes a great companion to perennials, and as an edging plant. My Monet Purple Effect Weigela grows 18” to 2 ½ feet tall and wide in partial or full sun.

Little Gem Spruce - Picea abies ‘Little Gem’

This compact evergreen has dark green needles, making it attractive all year round. Its pyramidal shape makes it a great choice as an accent feature or in a border. It’s drought-tolerant and requires little care, making it a very appealing low-maintenance choice! Little Gem reaches a mature height of 10” to 1’ and a spread of 1’ to 2’. Plant this shrub in full sun.

Blue Star Juniper - Juniperus squamata ‘Blue Star’

Sun-loving and slow-growing, Blue Star Juniper graces the garden with steel blue evergreen foliage that’s a beautiful contrast to many plants. It’s also drought-tolerant and requires very little pruning, making it an easy to care for naturally small shrub. Growing 1 to 3’ tall and 1 ½ to 3’ wide, its shape makes it great as ground cover or as an edging plant.

Bluebeard - Caryopteris

Classified as a shrub or as a woody perennial, either way, it deserves to be on this list. Bluebeard loves full sun and grows anywhere from 2 to 4’ in a compact mound. Sweetly scented and long blooming, it attracts all the pollinators: bees, butterflies and hummingbirds. Bluebeard foliage and blooms come in various colours depending on the variety, so it’s easy to fit into your landscape plans.

Inkberry Holly - IIlex glabra

Native to North America, Inkberry has lots to love. It looks similar to Boxwood and can be trimmed to shape, but this slow-growing evergreen also forms a tidy mound, and it blooms in the Spring! It will grow in full to part sun, and smaller varieties reach 3 to 4’ high.

While this list contains 5 of our favourites, we have lots more to offer in the garden centre. Come by and take a look! Discover how growing small shrubs in containers or small spaces adds beauty and texture, enhancing your garden bed, patio or balcony.

TIP: April and May are the best months to plant shrubs in Southern Ontario.

The much-loved boxwood hedge has been a classic for centuries and is widely used in gardens worldwide. Neatly trimmed and manicured boxwood becomes the framework for containing everything from roses to riots of perennial blooms. From extensive estate gardens to small and modest yards, boxwood is a versatile shrub that earned its place by being easy to care for and prune.

Unfortunately, this staple shrub has trouble brewing, which impacts its leafy lifespan. 

Since its first appearance in Ontario in 2014, the Boxwood Blight has become a significant concern for gardeners. However, the University of Guelph is not sitting idly by. They are actively researching this issue and working hard to find solutions to protect beloved boxwood shrubs.

Sometimes, being popular isn’t all it’s cracked up to be. Because Boxwood is a widely planted favourite, a new pest attracted to it, the Boxwood Moth (from Asia), has easily spread and is infecting shrubs.

Beautiful Boxwood Alternatives

Boxwood Blight and Boxwood Moth do pose severe threats to Boxwood shrubs, but here's the good news—many shrubs make great alternatives! Using a similar shrub is one of the simplest solutions to Boxwood's issues. You have lots of options to protect and diversify your garden.

Inkberry Holly

The closest Boxwood lookalike is the Inkberry holly. It naturally grows in a rounded evergreen mound, can be trimmed like a traditional boxwood hedge, and has other enticing bonuses! Not only is it native to North America, but unlike boxwood, it blooms. In the spring, Inkberry holly is covered in showy white flowers, making it a standout alternative to boxwood. Here at Eising Greenhouses, look for Gem Box Inkberry Holly.

Upright Junipers

Blue Arrow and Moffat Blue Junipers make beautiful hedges and stand-alone accent trees. Both have an elegant upright form, striking blue evergreen foliage, and silvery blue berries from late spring to late fall. If that isn’t enticing enough, add drought tolerance to the list of features!

Showy Shapes and Standards

Consider a standard evergreen or a dwarf variety that has been pruned and sculpted to become a piece of art if you want to add something even more unusual. What’s a standard? It’s usually a single trunk with a plant at the top, like a compact evergreen shrub. 

Standards and shaped dwarf evergreens can make a bold statement or add wonderful whimsy to your garden. We have lots to choose from, but here are a few examples to get your imagination going!

When it comes to replacing boxwood, there are many creative solutions and beautiful plants to choose from!

For more information:

Landscape Ontario - Boxwood Blight and Boxwood Moth 

Toronto Master Gardeners - Rethinking Boxwood

Canada.ca - Box tree Moth