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! 🌱

By Dave Zeldon and Ely Schweyer

This is the time of year that most garden centres will have on display their wide variety of Amaryllis bulbs, including the evermore popular waxed dipped. These enormous bulbs that are appearing now will be ready to burst into bloom within 4-8 weeks after planting.

Non-Wax Dipped: Planting

All Amaryllis need is a bit of commercial potting soil that should not cover the shoulders of the bulb (try leaving about 1/3^rd of the bulb showing above the soil line), with the nose (or narrow end) of the bulb peeping well over the top of the pot. Make sure that you use a well-drained container that is 3-4” bigger in diameter than the bulb itself.

☝️A heavy clay pot will prevent this top-heavy plant from toppling over. To achieve continuous bloom, plant at intervals of two weeks for stunning colour in your home.

Non-Wax Dipped: Care

Once leaves emerge, fertilize once a month with a 20-20-20 water soluble fertilizer for houseplants. Water sparingly and wait for the miracle in a warm sunny room. Sub-irrigation or watering from the bottom of the drip tray will keep the surface soil dry, thus keeping and bulb rot organisms and those pesky fungus gnats at bay.

Non-Wax Dipped: It's Not Done Yet!

When blooming is over, remove the scape (or flower stock) and place the plant in a sunny spot and continue to water. This is to allow the leaves to regenerate the bulb. In springtime, when all danger of frost has passed, bring the bulb outdoors and let it spend its holidays in a shady spot. In some varieties the leaves will die back in September to give the plant a rest for a couple months. Stop watering and store the bulb on its side in a cool place for about eight weeks, when the leaves will once again begin to emerge.

   Amaryllis can go 3-4 years without repotting as they don’t mind a little crowding. Try growing a couple of bulbs in larger pots to see if you can get a clump of flowers from the offshoots or babies that will develop after a couple of years.

Or, Try One of These Wax Dipped Bulbs!

Now growing more popular are the care-free waxed-bulb Amaryllis!

   Experienced growers and beginners alike love that these waxed bulbs do not need to be planted or watered! Each of these robust bulbs are carefully prepared in festive-coloured wax, allowing you the freedom to place them among your holiday decorations.

   Simply keep the bulbs at an ambient room temperature of at least 16C (70F)  for beautiful blooms in five to six weeks. 

   These novelty items are low commitment! Their only fault is their lack of longevity - gardeners don’t get to enjoy them after year as these waxed bulbs were designed to be a one-use throwaway item!

   BUT with a little luck and perseverance you may be able to save the bulb for next season after blooming. All you have to do is to carefully remove the wax layer, remove the flower stalk and place the bulb and with its remaining leaves into a pot of good growing media, allowing the leaves to regenerate the food stores in the expired bulb.

   If you’re looking for more information – or perhaps, Amaryllis – visit Eising Greenhouse and Garden Centre! Happy Holidays! ✨

Ah, the sanctuary of a nice, cool shade garden on a hot summer day. Lush foliage comes to mind, and maybe a nap in a hammock. But what do you do when you have a shady spot in the garden that isn’t so lush and could use a boost? A planted container or two can be just the thing! 

Here’s a scenario that can happen to any of us. A plant isn’t doing well and needs to be moved. Or maybe something just didn’t survive. Now what to do with that gap? The beauty of planting in pots is that you can move them around, but also create conditions for plants that you might not have in the garden. For example, one of the toughest places to grow anything is in dry shade - tree roots can compete for space and for moisture. That’s when planting in a container, or several is the way to go.

What is a Shade Garden?

In general, a shade garden is an area that gets less than six hours of sunlight in a day. When choosing plants, remember that some will tolerate shade better than others. When it comes to plants, shady areas are divided into three categories:

• Full shade - no direct sunlight, only reflected sunlight from surrounding areas
• Partial or Semi shade - in the sun for part of the day and shade for the rest
• Light shade - sunlight that is filtered, like under a tree with smaller leaves

Choosing Containers and Pots

While containers can be made out of a variety of materials like plastic, concrete, wood or fiberglass, the key is using a pot with at least one drainage hole. 

Keep in mind that smaller pots will dry out more quickly. Larger pots retain moisture longer, but when they’re full of soil and plants they get heavy. Look for a Goldilocks pot that’s “just right”, or splurge on a Schwarzenegger-sized pot if you’re looking to build up those biceps!

Whatever pot size you choose, always use a growing medium that’s designed especially for containers. At Eising Garden Centre you’ll find potting mix which is light and airy, unlike garden soil, which will compact and retain too much moisture. If you’re using a big container, you may want to use a smaller, more shallow pot as an insert, or put natural mulch in the bottom before you add potting soil. Doing this will reduce the amount of soil used, and keep the container lighter as well.

Plant Selection

This is the fun part! While many plants do well in pots, here are just some of our favourite shade plants for containers:

Coleus

Coleus is an annual that will grow in full shade and comes in a variety of very interesting leaf colours. This plant is known for its vibrant leaf colours, not its blooms.

Begonia

Begonias come in a wide variety of shapes and colours, making them a versatile annual for containers. Some varieties are happy in full shade, while others like light, or filtered shade. Most begonias like good drainage so their roots are not too wet.

Impatiens

These annuals are popular for a reason!  They come in a wide range of very brightly coloured flowers that do well in full shade.

Trailing Lobelia

The trailing type of Lobelia is an annual that grows well in shade. The masses of prolific blooms come in many pretty colours to mix and match with other plants.

Caladium

A showy annual with vibrantly coloured leaves that will illuminate any shady area. Caladiums like partial to full shade but if you’re a pet owner be careful - this plant is toxic to cats and dogs.

Heuchera or Coral Bells

Coral Bells are perennials that also come in a wide variety of beautiful leaf colours. This plant will thrive in shade, but can also tolerate some sun and they are drought tolerant.

Hosta

Known for its lush foliage, this perennial comes in such a wide variety of sizes, colours, and sun tolerance, and is by far a favourite. Many people don’t think of it as a container plant but for all of the features mentioned, it makes a great choice as a potted plant.

Fertilizer

Like all plants in containers, check the moisture levels often and provide water and fertilizer throughout the growing season. This article contains more information on caring for annuals and perennials.

Design

While you can mix and match any plants for shade containers, this article about container design ideas for sun-loving annuals may inspire you! 

As mentioned above, many plants will do very well in containers. It’s also fun to experiment with annuals and perennials you can’t necessarily grow in the garden, or for anyone with a patio or balcony. Don’t be afraid to mix annuals and perennials together in a container, or to use one statement plant. Some potted plants will need extra protection in the winter like perennials, small trees, and shrubs, but growing plants in containers is a great way to add a splash of colour, or include some bold foliage in tough-to-grow areas.