By Dave Zeldon and Ely Schweyer

As plant people, we’ve all experienced that moment when we realize the novelty phase of that plant we brought home from the garden centre has worn off. The plant isn’t standing quite as tall, the flowers aren’t as bold, and the leaves are unravelling smaller or not at all. What is this magic they perform in the greenhouse? Perhaps you’ve provided sufficient lighting and adequate watering; there’s just one thing that is often overlooked because dirt is dirt, isn’t it?

  97% percent of plant tissue is made up of carbon, hydrogen, and oxygen pulled from the air and water, the remaining 3% is comprised of 16 other elements taken up from the soil. The quality of soil then is crucial to your plant’s health. Whether your plants are in pots or in ground, each soil type you could provide your plant offers something unique and may lack in another.

*Clay particles are even smaller than silt particles.

Resist the Urge to Slam Your Plant in Potting Soil

There’s bags and bags of rocks, sand, bark, manure, and moss on the shelves, yet the common buyer seems to always opt for potting mix. It’s fair; organic matter is usually great for plants and simple to use. However, most people don’t realize it’s merely an ingredient.

   Strictly using potting mix is like attempting to make a loaf of bread out of only flour. All those bags of other materials on the shelves are also components for a successful plant diet!

  Potting mix is a great base material, however, alone it presents risks of compacting, becoming waterlogged, can mold easily, and over time will become depleted of nutrients. Consider mixing the following ingredients into your pots, ground and raised beds to meet your plant’s required nutrients, pH level, and volume of moisture.

🖱️Use our Plant Finder to find some details on your plant! We try our best to keep this updated!

👍 Rule of Green Thumb: Plant roots can help you to determine the medium needed – thick, robust roots (i.e., yucca) typically enjoy chunkier materials, and smaller, delicate roots (i.e., begonias) enjoy finer materials.

Mulch and Bark Bites

• Mulch is the organic slow-release fertilizer, as it slowly decomposes, it lowers soil pH. However, may eventually compact soil once fully broken down.
• In the meantime, it creates shelves in the soil that create air pockets and prevent the soil from compacting. Mulch is a great short term medium for arid potted plants.
• If kept too wet, it can harbour fungus gnat larvae.
• Make sure when sourcing your mulch it doesn’t contain any black walnut.

🖱️ See more on mulching here. 

Sphagnum Peat Moss

• Peat moss is used to help retain moisture and lower pH in the soil given it is harvested from bogs.
• Retains nutrients very well.
• It is difficult to rehydrate once it loses moisture.

Coconut Coir

• Coco coir, much like peat moss is used to keep the soil moist and keep pH low, however it lasts longer and is possibly less invasive to harvest.

Sand

• Grains are relatively large and do not bind, allowing for excellent drainage depending on grade.
• Adds weight to top heavy plants.
• Has no ability to store minerals itself, however, pH can vary by its content of shells, minerals like silica, or fine organic matter.

Manure & Compost

• Source these organic by products locally and ensure they’re not too hot. These additions can significantly lower pH.
• Sheep manure is usually near free of weed seeds as sheep digest seeds better than cattle and horses!

Perlite

• Perlite is a volcanic byproduct (so it floats like pumice) that helps drainage in the soil and prevents compaction – vital in the case of starting seeds.
• If a rockier, well-draining medium is required for your plant, consider perlite.
• Perlite can expand holding trace amounts of water.
• Perlite has a neutral, slightly acidic pH.
• Make sure when sourcing perlite, that you are not being sold Styrofoam balls.

Vermiculite

• Vermiculite is a recycled mineral used similarly to perlite, and too has a neutral, slightly acidic pH.
• Expands with water content.
• Can contain amounts of potassium and magnesium (as well as good cation exchange capacity).
• Runs the potential risk of introducing asbestos into your soil.

Calcined Clay Materials

• Clay materials like recycled brick bits, pottery, or lecca are typically used for arid plants as it improves aeration and drainage.
• Can raise pH.
• Can retain some water.
• High cation exchange.
• Can also be used for starting robust cuttings when kept moist.  
• Probably not ideal for inground amendments.

Maintaining Your Plant’s Dietary Needs

Perhaps we’ve crafted the perfect soil type for your plant – your plant thanks you – but over time, we will end up in the same staling predicament. Why? Because with each thorough watering, we leech the soil of the provided nutrients. Best we use the plant-specific required fertilizer for your plant to prevent nutrient loss.

   Organic sources of fertilizer such as bonemeal, composts, and manures, along with the application of lime, will improve the physical condition of the soil in terms of water and element holding ability. Unfortunately, in many cases though, manures and lime alone cannot be depended upon to provide enough available nutrients in soils with low essential element reserves.

   Let’s talk about commercial fertilizers, which can help target your plant’s exact needs much like vitamins and supplements!

The Scoop on Fertilizers

Of the essential 16 elements your plant pulls from the soil, Nitrogen (N), Phosphorus (P), and Potassium (K) are the most critical for good plant growth. You’ll recognize the three numbers appearing on your commercial fertilizer labels known as the fertilizer analysis of the product, representing the percentage of each of the three "macronutrients" in the order of N, P & K.

Nitrogen (N) is necessary for green leafy or vegetative growth which is important in crops like corn, cabbage, and potatoes.

☝️ It is important to remember that you should not use a fertilizer which is high in nitrogen late in the summer on your perennials, as it may cause a boost of growth which will only freeze as the cold weather sets in. Also, too much nitrogen in the analysis could cause too much lush, leafy growth thus inhibiting the desired flowering aspect of a plant species.

Phosphorus (P) promotes the development of flowers, fruit and roots. Crops like tomatoes, cauliflower and garden flowers.

Potassium (K) boosts plant hardiness, stem strength, resistance to disease and drought which is important to all crops, but especially in potatoes, celery and rhubarb.

👍 Rule of Green Thumb: For foliage plants, provide them with shade and lots of nitrogen, and for flowering and fruiting plants, provide them with lots of sun and lots of phosphorus!

Amending Clay

Hello Haldimand and Eastern Norfolk!

   We’re presented with the challenge of compacted, often shallow and waterlogged clay, which proves difficult but not impossible.

   Clay becomes compacted and waterlogged as it is the smallest soil particle – smaller than a grain of sand, and even smaller than silt – with rough edges that allow it to interlock and bind. In this instance, roots cannot penetrate further into the soil, are susceptible to root rot, and air pockets are slim to none.

   This, however, can be fixed with the addition and renewal of the above materials.

  Mindful that you don’t create a watery bowl in the ground (score the edges the area being worked), you can add organic matter (i.e., manure, compost, and potting soil) for nutrients, as well as mulch, sand and perlite for aeration and drainage. Annual soil particle aggregation in clay soils increases air porosity (air pockets) and is accomplished by the incorporation of organic matter that breaks down to form humus.

🖱️ See more here for planting trees in clay. 

We hope this soil and fertilizer guide helps you provide all the vital nutrients to your beloved plants in ground and above ground! For more information - and soil – visit Eising Greenhouse and Garden Centre! 🌱

If you’re looking for blooms that come back each Spring with a burst of colour, here are ten of our favourite flowering perennials and ground covers.

Plant These for a Spring Show!

Bleeding Heart (Dicentra)  

Height: 30-120 cm, Spread: 45-90 cm

Flower Colour: white, pink, red, purple

Blooms: spring, summer

Growing: While Bleeding Hearts will tolerate full sun or full shade, they prefer the protection of light shade. This perennial is fairly drought tolerant, but it will thrive in evenly moist soil, and blooms will last much longer if the soil is moist.

Hellebore Christmas Rose (Helleborus)  

Height: 30-45 cm, Spread: 30-45 cm

Flower Colour: white, green, pink, purple, yellow

Blooms: late winter to mid-spring

Growing: Moist, humus-rich, well-drained soil in lightly dappled shade is where hellebores do best.

Primrose (Primula)

Height: 15-60 cm, Spread: 15-45 cm

Flower Colour: blue, red, orange, white, pink, purple, yellow

Blooms: spring, early summer

Growing: Full sun or partial shade and moist, well-drained, humus-rich soil.

Anemone Windflower (Anemone) 

Height: 8-150 cm, Spread: 15-60 cm

Flower Colour: white, yellow, pink, blue

Blooms: spring, summer or fall

Growing: Anemone does best in moist soil and partial or light shade, but they will tolerate full sun. While Anemone can take a while to become established, they’re worth the wait!

Columbine (Aquilegia canadensis) 

Height: 45-90 cm, Spread: 30-60 cm

Flower Colour: white, red, yellow, pink, blue, purple (The colour of the spurs is often different than the petals)

Blooms: spring, summer

Growing: Columbines love full sun or part shade and moist, well-drained soil. This plant will self-seed and seedlings can be transplanted.

Virginia Bluebells (Mertensia virginica) 

Height: 30-60 cm, Spread: forms groupings

Flower Colour: blue, pink, purple

Blooms: spring

Growing: Plant in partial to full shade with humus-rich, moist, well-drained soil. This woodland plant has blooms that are attractive to Hummingbirds and pollinators. Foliage dies back right after it blooms.

Moss Phlox or Creeping Phlox (Phlox subulata)

Height: 10-15 cm, Spread: 60 cm

Flower Colour: white, red, lavender, pink, bluish purple 

Blooms: early spring

Growing: Plant in sun to partial shade with humus-rich, moist, well-drained soil. Spreads horizontally as it grows and creates new roots where the stems touch the ground. Do not prune in the fall as Spring’s flowers will already be forming on these plants.

Lungwort (Pulmonaria)

Height: 20-60 cm, Spread: 20-90 cm

Flower Colour: white, red, pink, blue

Blooms: spring

Growing: To avoid root rot, grow Lungwort in moist, humus-rich soil that’s well drained. They prefer partial shade to full shade.

Pasque Flower (Pulsatilla)  

Height: 10-30 cm, Spread: 20-30 cm

Flower Colour: white, red, purple, blue

Blooms: early to mid-spring

Growing: Very well drained soil is important for Pasque Flower, which does not like to sit in wet soil. It will grow well in full sun or partial shade.  

Peony (Paeonia)

Height: 60-80 cm, Spread: 60-80 cm

Flower Colour: yellow, pink, red, purple, and shades of white

Blooms: spring, early summer

Growing: Humus-rich, moist and well-drained soil in full sun or partial shade is where peonies do best. Adding lots of compost and planting at the proper depth is very important for peonies to bloom. Be sure to plant potted peonies at the same level as the soil around them, not higher.

Holiday decorating would not be the same without the classic Poinsettia. They are the iconic seasonal touch that brightens up our homes and offices. Poinsettias also make great gifts for friends, family and co-workers who appreciate festive decor.

Known for being low-maintenance also adds to their popularity. Keeping your Poinsettia looking healthy and vibrant during the holidays and beyond is easy when you know these few simple steps to care for it.

Temperature

This is a plant that is sensitive to temperature fluctuations and extremes. Keep it in its plastic sleeve while you’re transporting it. Immediately remove the protective wrapping as soon as you’re home. 

Keep your plant away from drafts or a direct heat source like a fireplace or heat vent. Poinsettias thrive in temperatures between 18-22°C during the day and around 15°C at night. Ideal temperatures will keep the bracts (flowers) colourful.

Light

A spot with bright, indirect light is ideal for your Poinsettia. Placing it near a window, but not in direct sunlight, so that it gets at least 6 hours of light a day is optimal.

Water

Water your Poinsettia plant thoroughly when the soil's surface is dry to the touch. 

Allow the plant to drain well. If your plant is in a foil wrapper, or it’s been placed in a decorative container without holes, or on a plant tray, remove any excess water to avoid root rot.

While Poinsettias do not like sitting in water, they do appreciate humidity. Keep a tray or vase with water nearby, or occasionally mist your plant to maintain humidity.

By following these easy steps, your Poinsettia will look great for months, making it a cheerful addition to your home right into late winter!

Whether you’re just starting to explore the world of unusual plants, or you’re already an avid collector, there are a wide array of weird and wonderful houseplants to satisfy your quest for something a little different. 

Tropical plants and houseplants come in every shape, size, texture, and colour imaginable, plus some you would never have imagined! 

Exotic houseplants often have striking appearances which make them valuable as eye-catching focal points in your decor. The range of distinctive features can also make them a natural choice to express your personality and style. 

Like your more common houseplants, unusual varieties can also contribute to indoor air quality, as well as the overall benefits to your well-being that come with having living plants in the home.

The unique characteristics of rare or unusual houseplants often have interesting backgrounds. Learning about their natural habitats and origins only makes them more intriguing! 

Here are some wild and wonderful houseplants that will add interesting foliage, blooms, or both to your home right now!

Pitcher Plant

A rare and exotic group of tropical plants with pitcher-shaped leaves that are carnivorous. That’s right, they eat insects to obtain the nutrients they need! This means that with most varieties you do not have to fertilize them. Most are happy catching a bug or two for food. 

Keep this plant from drying out completely between waterings by temporarily placing it in a water-filled tray to absorb moisture through the roots. Remove the pot from the tray once it’s saturated, and allow the excess water to drain away. Pitcher plants prefer pure, mineral-free water like rainwater. No tap water for these precious prima donnas! 

One Pitcher Plant variety that we love is Miranda (aka Nepenthes x Miranda). From tropical Malaysia, it is a very large pitcher plant with attractive spotted pitchers that can be over 18” wide when fully mature. Because of its size, it is quite effective at catching larger insects like wasps. It’s easy to grow, either in a sunny window or outdoors (only in the summer) and is heat tolerant but not drought tolerant. 

ZZ Plants

Native to East Africa, Zamioculcas zamiifolia is also known as the houseplant ZZ, or Zanzibar Gem. While the name is complicated, this plant is not fussy at all, making it great for beginners! ZZ will thrive in almost any lighting conditions except direct sunlight, plus it is drought tolerant so you can allow it to dry out between waterings.

 

The biggest attraction to the Zanzibar Gem though is its thick, dark green and glossy leaves that almost look fake! If that sounds intriguing, hang on. There’s more!

Black Raven ZZ is a new variation with stunningly dramatic black-toned leaves. Unique to be sure, but luckily with the same low care requirements!

Cactus

There are so many weird and wonderful varieties of cacti that come in all shapes and sizes! These sun-loving plants require little care, but here are a couple of tips that will keep them looking sharp. (Ouch!). 

1. Give their pot a little turn each day so that your plant is eventually exposed to light on all sides. This saves you from having a lopsided cactus. 
2. Water is essential but monitor how often your cacti need it. In the winter, when they’re dormant, they will need less water. Let the soil dry out completely between waterings. Using room-temperature rainwater is ideal. Tap water contains minerals which can disrupt the flow of nutrients to the cactus. Water it well, then allow the excess moisture to drain away rather than pool under the plant. Cacti don’t necessarily need fertilizer, but they do welcome a feeding during their summer growing season. We can help you choose a fertilizer that’s been specially formulated for cactus to ensure the proper nutrient ratio.

A few varieties of cacti that we love are: 

• Monkey Tail (Hildewintera colademonosis)
• Boobie (Myrtillocactus Geometrizans Fukurokuryuzinboku)
• Spiral (Cereus forbesii Spiralis)  

With their evocative names and exotic shapes, cacti are so much fun to grow! And don’t be surprised if the kids want to have a few to call their own.  

Stop by Eising Greenhouses and see what we have in store. While you’re here, say hello to Courtney who is always happy to talk about unusual houseplants!