Dayflower

FLOWER FOR A DAY, JUST ONE

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So Sad

The cheery blue color of dayflowers — so named because each flower lasts but a day — does nothing to dispel some pity I feel for them. Not that the petals cry out for my sympathies. You have to get fairly close to the plant, or really stop and look at it, to even see its blossoms.

The reason for my pity demands an even closer look at a dayflower. Zoom into the flower, where you’ll see two prominent azure petals, and then, further below, behind two prominent, anthers that swoop forward, you’ll see a third petal, this one pale in comparison to the other two, and much smaller.Dayflower

Those petals are what give dayflower its botanical name. Carl von Linnaeus, the founder of our present system of plant nomenclature, gave dayflowers the botanical name Commelina to honor two brothers of an eighteenth century Dutch family who were shining stars in botany at that time.

Why two brothers and three petals? It turns out that there was a third brother Read more

Rose d'Ispahan fully open

GARDEN AROMATICS

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Some Good, Some Not So Good

One of gardening’s pleasures  —  for me, at least  —  is that it makes scents. Ha, ha. But seriously, wave after wave of scent has wafted across my terrace since the garden awakened in early spring. Back then, the most prominent aromas were from daffodil blossoms, followed by those of plum, clove currant, Koreanspice viburnum, and then dame’s rocket.

clove currant

Clove currant

Olfactory pleasures, like the other sensual pleasures that flowers afford us, are incidental to the flowers. Evolutionarily speaking, we don’t return the favor with anything more than the carbon dioxide that we  —  and other animals  —  exhale.

Rather than smelling pretty for us, flowers do so to attract pollinators. Read more

Marigolds

A GEM OF A MARIGOLD

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Some Marigold Species

Marigold is among the most widely planted and, hence, mundane of flowers, so merely writing the word is might make you yawn. Still, I count myself among those who enjoy marigolds, and welcome them as part of summer’s essence with their yolk-yellow blooms and pungent foliage. To please both camps of reader — those of you bored by marigolds and those of you enamored by marigolds — let me introduce Lemon Gem and its other lesser know kin.

Lemon Gem is unlike the marigolds familiar to most people. In fact, it belongs to a different species (Tagetes tenuifolia) than the French marigold (T. patula) or African marigolds (T. erecta) soon to open their sunny heads all over the place. You grow those marigolds for their flowers, large, solid color pompoms in the case of the African marigolds, smaller, sometimes multicolored single or double flowers in the case of the French marigolds. Read more

Old pear tree and barn

THINNED TREES AREN’T SKINNY

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Avoid Extremes

A week or so ago, fruit trees were so full of blossoms that they looked like giant snowballs, foreshadowing a heavy crop of fruit later this season. Too heavy, perhaps, for the branches to support. Too heavy, perhaps, for fruits that are large and luscious. Surely so heavy that next year’s harvest could be paltry.Pears in bloom

Some fruit trees are more prone than others to getting into a feast and famine cycle of a heavy crop one year and a light crop the next. My Macoun apple tree, although it bears delectable fruits, is the worst in this regard among the few apple varieties that I grow. Read more

Tulips in a vase

DEER FOOD

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Big Bulbs Uneaten

Chomping down on a rosette of freshly emerging tulip leaves is just the thing to drive away winter’s doldrums — for a deer. Tulips in a vaseCrocuses probably taste almost as good to these creatures. There’s no need, though, for you or me to forsake the blossoms of spring bulbs; plenty of plants don’t appeal to deer palates. Read more

Cherry blossoms

HAPPY BIRTHDAY GEORGE

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Was He a Bad Boy?

Washington’s birthday is a proper time to think about cherry trees. Rather than question whether or not George did chop down the tree, and whether or not he had the honesty to admit to the act, I wonder what kind of a cherry it could have been. (The story, incidentally, is apocryphal, having been fabricated by Mason Locke Weems for his 1802 book, Life of George Washington; With Curious Anecdotes, Equally Honorable to Himself and Exemplary to his Young Countrymen. “Parson” Weems also wrote of Washington throwing a silver dollar across the Delaware River).

That cherry tree could very well have been something akin to the sweet cherries we can buy or grow today. Sweet cherrySweet cherries (Prunus avium), sometimes called bird cherries or, in their more wild state, mazzard cherries, were amongst the plants ordered from Europe by the Massachusetts colony in 1629. By 1650, there was a cherry orchard in Yonkers, New York, and before the end of that century, there were plantings in Rhode Island, Maryland, and Virginia. Trees became so abundant that in 1749, Peter Kalm wrote that “all travellers are allowed to pluck ripe fruit in any garden which they pass by, provided they do not break any branches; and not even the most covetous farmer hindered them from so doing.” So it is not unlikely that Papa Washington had a few sweet cherry trees planted at his farmstead along the shores of the Rappahannock River.

That abundance of cherry trees and cherries is interesting because here in the Hudson Valley, in Eastern US in general, sweet cherries are not an easy crop. Read more

Espalier pear tree

APICAL DOMINANCE — WHAT FUN!

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Suppression & Stimulation

“Apical dominance” sounds sadomasochistic, but no reason to shudder: it’s practiced by plants and, even when carried to an extreme, results in something as agreeable as a head of cabbage. True, we gardeners sometimes have a hand in apical dominance, but it’s still just good, clean fun.

Look upon it as hormones gone awry or as hormones doing what they’re supposed to do; either way, apical dominance is the result of a hormone, called auxin (AWK-sin), that is produced in the tips of growing shoots or at the high point of stems. Traveling down inside the stem, auxin sets off a chain of reactions that puts the brakes, to some degree, on growth of side shoots, giving the uppermost growing point (the apical point) of any stem the upper hand in growth.

Side shoots mostly arise from buds along a stem, and whether or not a bud grows out into a shoot depends on how close the bud is to the source of auxin; the closer to the source, the greater the inhibition, how far and to what degree depend on the genetics of the plant. ‘Mammoth Russian’ is a variety of sunflower that grows just as a single stem capped by a large flowering disk; with no side branches at all, this variety demonstrates an extreme example of apical dominance. SunflowersAt the other extreme would be one of the shrubby species of willows that keeps sprouting side branches freely all along their growing shoots.

Even within a single species of plants, individuals vary in their tendency to express apical dominance. A fuchsia variety Read more

Fruit in hand and on stem

EASY CHERRIES

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Sweet, Juicy, & Tolerant

Nanking cherries (Prunus tomentosa) are now at their peak of perfection, sweet and sprightly flavored, brilliant red in color, still firm, and, as usual, abundant. Nanking cherries are very juicy and not stingy to release the juice. Straight up, it’s the most refreshing juice imaginable.Picking Nanking cherries

You’ve never heard of Nanking cherries? Understandable since they are an uncommon fruit. (And warranted a whole chapter in my book Uncommon Fruits for Every Garden, now out of print but in the works for updating and expanding.) As the name tells you, they are native to China, more generally to the cold, semi-arid regions of Asia. This provenance tells you something about the toughness of the plant, where it weathers winter temperatures below minus 20 degrees F. and summer temperatures as high as 110 degrees F. Read more

Wisteria flowers

WISTERIA UPS AND DOWNS

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Shoots vs. Flowers

Around this time of year, few plants are as dramatically beautiful as a well-grown wisteria, whose chains of lavender flowers drip like little waterfalls from the branches. I’ve always wanted one, and now I have one. Wisteria flowersBut I’ll keep in mind a common complaint people have with wisteria: The frustration when a wisteria plant is all shoots and no flowers!

This problem has some causes and some solutions. The common complaint can often be traced to something as simple as a poor plant or a poor site. Perhaps Read more

Heath bed from NE

A SLIPPERY SLOPE

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A Little History

Walking down the path alongside my home first thing this morning, I looked to my right and was wowed. What I saw warranted bragging rights. Flowers in red, pink, white, and a touch of purple against a backdrop of varying shades of green leaves, some sparkling with reflected light, others mat, holding onto any reflections. Heart-shaped leaves, lance-shaped leaves, and compound leaves livened the backdrop. All of it set off against the solid backdrop of the red brick wall.Heath bed from NE

Although I chose and planted all that I admired, not too much credit for it was mine. This was no carefully planned design laid out on paper with squiggly shapes representing plants and their locations, each shape labeled with plant names and varieties, perhaps even a note to flower colors.

Twenty plus years ago, the site was a strip of sloping lawn on the east and north sides of my home. Imagining myself one day slipping while mowing with my foot sliding beneath the mower that birthed a plan for building a rock wall at the base of the slope which would be backfilled with soil. No more slope and no more mowing.

The Heath Family Stays Together for a Reason

And so was borne my “heath bed,” a bed of various plants in the Heath Family, Ericaceae. Grouping such plants together was not just a botanical plaything; it had function. Read more