It’s a Numbers Game

Fertilizer is confusing, and no wonder. Shelves are stacked with more types of fertilizer than supplements in a health food store. All are in brightly coloured packaging adorned with pictures of gorgeous flowering plants and unblemished vegetables. 

There are fertilizers for tomatoes, ones for roses, another for perennials and so on. All you need to do is match the plant to the fertilizer, right? It couldn’t be easier, except if you grow roses, tomatoes, and dozens of other types of plants, you’ll soon have a full shopping cart. The truth is, you could get by with only one type of commercial fertilizer, or even none if it’s for the garden. By using compost and mulch there, you’d still be fertilizing, but as nature does it.

You’ll note packages of fertilizer always have three numbers. These represent the three main nutrients plants require — nitrogen, phosphorous, and potassium, noted as N-P-K. If the K is throwing you off, that’s because it comes from the scientific term, kalium. These numbers indicate the percentages of each element in the package or bottle. 10-15-10 means it contains 10% nitrogen, 15% phosphorus, and 10% potassium.

You might be wondering why there are so many different proportions listed, and why manufactures can’t agree on those proportions. Next time you’re shopping for fertilizer, ignore the glossy images that were shot in a studio and compare those numbers.

You’ll immediately see they differ from brand to brand even though they’re specified for the same type of plant. I’ve seen brands of fertilizer formulated for tomatoes with the numbers 6-12-12, 4-6-8, 8-24-8, and 18-18-21. No wonder the consumer is confused.

Now you might be wondering how they came up with the numbers in the first place. When plants were first analyzed, it was found they contained different proportions of these three nutrients. It was then assumed that each type of plant required fertilizer in the same proportion, except plants don’t use nutrients the same way at the same time as they’re growing. They take up what they need from the soil when they need it.

It’s much like going to the grocery store when you’re out of milk, butter, or eggs. You buy what you need rather than stuffing the refrigerator. A balanced fertilizer, that is one with equal percentages, say 5-5-5 or 10-10-10, is fine in most situations, but by juggling the numbers manufacturers were able to make their products appear unique. And that’s when marketing with numbers began. But do you really need all that fertilizer? If you’re growing in pots and planters, indoors or out, yes you will need it, as most soil-less mediums have little or no nutrients, unlike real soil.

In the garden it’s a different matter. Remember that middle number, the one representing the phosphorus percentage? The soil in this area began with a limestone base, and as it degraded over time we were left with plenty of phosphorous in the soil. Garden soil doesn’t need any extra. In fact, so much has been added waterways are being polluted by it. 

As for the last number representing potassium, it’s only likely to be deficient in light, sandy soils, not in the typical clay soils we have in our gardens. This leaves nitrogen, the first of the trio. Nitrogen does not stick around in soil, which is why we’re forever fertilizing lawns. By adding compost and mulch, nitrogen and other nutrients are returned to the soil as the organic material is broken down.

Bottom line: If your plants are growing poorly, fertilizer is rarely the solution, and too much can be deadly.Your pots and planters will need it, so use the fertilizer of your choice, ideally, one with a ratio corresponding to 3-1-2 (24-8-16 or 12-4-8, for instance). Also look for additional micro-nutrients that are usually found in the fine print of contents.

Finally, do heed the directions. Like soap powder in the washing machine, more is not better. 

What a spring tonic.

I couldn’t resist those large, papery blooms of ranunculus I saw massed on a rack at the garden centre. The blooms, which resemble a small peony or a large carnation, are so vibrant, and vibrant is not how I’d describe my garden right now. The plant I brought home with its all too perfect to be real flowers is now at home, sitting beside a sunny window. The flowers last for ages, despite looking as delicate as crepe paper and they’re surprisingly tough. This makes them popular as cut flowers for the florist and in a wedding bouquet. They should keep me going until the daffodils and tulips appear. 

Ranunculus, and not ranunculi if there’s more than one, unlike octopuses, are greenhouse reared to satisfy the craving for colour everyone has when there’s not much going on in the garden in early spring, and they do it well. Commercial growers typically plant in fall for flowers to tempt us in late winter or early spring. With luck and TLC, they can be planted out in the garden after last frost and will continue to bloom until the weather heats up.

Like pansies, ranunculi are cool weather plants that dislike warm temperatures and they’ll tend to fade out as summer progresses. In warmer climates they’re as perennial as daffodils, returning each year. Unfortunately, they can’t take our winters and are gone after one season. They can, however, be treated like summer flowering bulbs such as dahlias and gladiolas. The tuberous root that a ranunculus develops can be dug in fall and stored over winter.

If planted in the garden, it would be best to mark the location as any sign of them will be long gone before fall. Planting in a container would make it easier to track them down, and in fact, it would be a better choice. That way you’ll get a close-up of the gorgeous blooms. Remove spent blooms to encourage more buds to pop open.

Besides trying to keep your spring purchase going outdoors, actual tubers can be bought and planted in spring, the same as summer flowering canna or calla lilies. That way they’ll grow through summer and flower in late summer to early fall when days are cooler.

The tubers are odd shaped, resembling a dark bunch of over ripened bananas, or gardener’s grubby fingers, I suppose. That makes it easier to be sure you’re planting them pointing the right way — fingers downwards with a couple of inches (50mm) of soil over them.

To attain the best plants, the larger the tubers the better. Whether in ground or in a container, don’t plant in soil that stays wet. If planted in a container, they will need fertilizing.The ranunculus family is huge, with over 500 species, and it marsh marigolds that will soon be popping up around wetlands anytime now, along with croaking frogs — if spring ever arrives. The Latin name for frog, rana, is where ranunculus got its name because many species grow in damp places.

Ranunculus asiaticus is the one that’s been bred most often to produce the varieties we see with huge flowers. The pot plants may not be labelled, but two common series are Tecolote and Bloomingdale — no connection with our Bloomingdale. Bloomingdale is a dwarf variety while Tecolote has longer stems. Because of its popularity as a cut flower, ever more hybrids are being developed, particularly in Japan.

If you can distract your eyes from the gorgeous flowers, you might find the foliage looks familiar. It looks a lot like parsley, except it can cause intense burning of the mouth and throat if swallowed, so keep them well apart in the garden or kitchen.

Low budget gardening

If you love gardening and it's at the bottom of  the list when it's time to dispense funds from a limited budget that is food, mortgage payments, or phone plans for teenagers, then consider dirt-cheap gardening, or if you prefer, gardening for the frugal. Better still, call it smart in a world where practising the three Rs (reduce, reuse, recycle? is considered a virtue.

Gardening is the ideal place to practice the above. Not only can it save you a tonne of money, but you'll also be helping the planet, and everyone knows it needs all the help it can get.

Begin indoors by extending the life of plastic containers before they reach the blue box. Blue box day is a treasure hunt for all kinds of garden stuff. Those 20-litre water bottles with the bottom cut out make an excellent cloche to protect young plants when there’s a risk of frost.

There are also surprising finds on garbage day such as decorative planters that someone tired of. I see coils of hose that only need a new end. Repair is another R to value. Garden tools are tossed out when downsizing is underway. While out curb shopping, scoop any old snow shovels; the handles are usually in perfect shape and make great replacement handles for the spade you broke trying to lever a rock out of the garden. Afraid of being seen as a scavenger? It’s a way of to survive in parts of the world. Wear a mask if it helps, but don’t stop by a bank on the way home.

Before those garden items make it to the curb, they pass through the garage sale stage. Garage sales are a major source of planters. Even an old suitcase can be filled with flowers — have plants will travel — and I don't know why, but wicker baskets seem to end up in driveways in quantities to rival the vast number of VCRs and vintage stereo systems from the ‘80s. Line the baskets with plastic and you'll have a lovely planter that will do at least a couple of seasons.

Depending on the number of fashionable planters you bring home from the garage sale trip, it can be pricey when you come to fill them with potting soil. Garden soil is fine but it may need lightening for better drainage if it’s clay based. Add sand or perlite to ensure it drains freely. Coir or peat moss will help retain moisture. Rather than peat moss, there is a more environmentally friendly medium produced with wood fibre.

Beyond planters for work in the garden, you will need a spade to dig or shovel the soil, but one trip past the tool racks at the garden centre can be frightening for the new gardener — "You mean I need all that stuff just to grow a few plants?" No. Garden tools are becoming like workshop tools/toys — a different one for every conceivable project or task. You'll get by surprisingly well with a minimum of a spade, a rake, hoe, trowel, and pruners. The spade is important for planting, but regular digging of flower or veggie beds can be reduced by top dressing with compost or leaves and letting the worms do all the work, and compost is usually free from most municipalities.

Plants for your pots or garden are the easiest. Grow your own from seeds or watch for plant swaps. Gardeners are constantly digging and dividing plants or sharing seeds and are eager to see them go to a good home. Remember, too, when buying plants, that small trees and shrubs will eventually grow into big trees and shrubs but will cost much less. Be a real gardener — be patient and be resourceful, and that’s another R.

Buyer Beware

While gazing at the gorgeous images displayed in seed catalogues, you might be wondering, have I seen that plant before, and is that a new colour? We always assumed catalogues had accurate representations of plants, and those of reputable suppliers always do. However, the world is changing and especially the online world where fact checkers, even for plants are lacking. 

In the early days gardeners relied on drawings and descriptions of the material in catalogues. Even Group of Seven artist J.E.H. MacDonald, designed many catalogue covers for Sheridan Nurseries. Photography eventually became the norm, first black and white then colour. These images depicted plants in an actual garden before it became easier to produce better ones under lighting in a studio.

There, images could be more easily adjusted to ensure the colours matched the real plant. I picture ex fashion photographers using their skills to show flowers in their best light where you might hear them cajoling poor plants with “Stretch that stem, unfold that petal, tint that pink, more stamen, more stamen. Work with me, work with me. Come on pansy — show me a pout.”

It’s hard to know what’s genuine now when nefarious vendors online have realized there’s a huge market of gardeners waiting to be tempted by new plants in never-before-seen colours. First it was editing software which made it easy to generate images, and strange new ones appeared. Now we’re dealing with artificial intelligence that can conjure up anything a creator desires.

We’ve long been awaiting a truly blue rose. With only a few clicks, it’s easy to produce an image of a blue rose with yellow polka dots or pink stripes, or any combination. And the same goes for vegetables that can be made to appear larger, taller, and produce amazing crops. Stick these images on social media with a thrilling description of a revolutionary new plant plus a link to where to send your money — click, click.

Seasoned gardeners might not be easily fooled, even though some probably are. I know I’ve been tempted. Beginners can’t be expected to recognise flowers as obviously fake when they’ve only recently discovered there are thousands of plants in a rainbow of colours to choose from. Of daylilies alone, there are over 80,000 registered varieties in vibrant colors and diverse shapes. So why not a rainbow rose?

It might not be easy to determine the legitimacy of a company, but all plants have, or should have, a genuine botanical name listed somewhere. But what copywriter wants to clog up advertising text with challenging words when a catchy new name attached to an AI image will produce instant clicks. It can give anyone a headache trying to remember the Latin names of all the plants in their garden but knowing that a plant should have a legitimate one will help avoid those budget breaking clicks.

That’s the plants. Don’t get me started on the products that claim to produce plants even more productive or floriferous. Buyer beware — everywhere. Buyer beware — click, click.