Focus on Flowers

Many of us are familiar with ageratum, the low-growing annual with fuzzy flowers that are blue/lavender color. It is a member of the Ageratum genus that includes 43 species of annuals and perennials, most of which are native to warmer regions of the American continents. They have felted oval or heart-shaped leaves and clustered flower heads. They like full sun and moist well-drained soil, and a common name is floss flower. Another common name is billy goat weed, which suggest perhaps that goats may like them. I am guessing about that, as I have never seen a goat eating ageratum in my garden. Of course, I do not have any goats in my garden, even though I do have ageratum, as it pairs well with just about any other plant of any color. I also grow tall varieties ‘Bavaria’ and ‘Blue Horizon’, which are 18-20 inches tall and produce good cut flowers that dry well. Some species of ageratum can be pink and white as well as blue. Some even grow in light shade—for example, Ageratum altissima, which gets quite tall and has fluffy white blossoms. Some native varieties of ageratum winter over in our zone 6 and may become a pest as they self-sow prolifically. As long as you just grow varieties of this plant that are annual in our cold climate, however, it is well behaved. Otherwise, you may need to get some goats!

Native to Mexico, dahlias probably grew in Aztec gardens as they were already in cultivation when the Spaniards arrived.Francisco Hernandez, a botanist and physician to King Phillip of Spain, described them in a book published in 1651. But dahlias were not introduced to Europe until 1789 when seeds were sent from Mexico to the Royal Gardens in Madrid. The flower was named in honor of Dr. Dahl a Swedish botanist and pupil of Linnaeus. They were sent to Kew Gardens in England in 1798 by the wife of the British Ambassador to Madrid. By 1835, John Wedgewood, the founder of the British Horticultural Society, grew over 200 different varieties of dahlias. They were popular cut flowers with blooms of many sizes and colors. If a tuber has a sprout of more than 2" long, clip it off before you plant the tuber. Dig a hole 4-6 inches deep and place the tuber on its side and cover it with soil. Fertilizer is needed every 3-4 weeks and must be low in nitrogen. Do not water until sprouts are visible above the ground and then water deeply 3 times a week. Full sun is best, but plant in part shade if your temperatures go over 100F degrees. Dahlias bloom about 3 months after planting. Cut blooms that are 2/3 open and place the stems in hot (but not boiling) water in a plastic container and leave them in it until the water cools.

Dianthus are well-behaved in our gardens. The flowers are fragrant, and the plants can be perennial, biennial, or annual. The common name "pinks” does not refer to the color but to the fringed edging of the petals that makes them look as if they had been cut with pinking shears. They like full sun but can manage some shade and a variety of soils. However, they do best in well-drained soil with good air circulation, as they are susceptible to root rot and fungal diseases. Rabbits eat the narrow grey/green leaves, but thankfully deer leave these plants alone. There are over 27,000 registered cultivar names, so there are plenty to choose from. Colors can be pink, lilac, purple, white, and combinations with picotee edging on the petals. They originated in Eurasian countries and are grown worldwide in home gardens because they are easy care and don't mind periods of dry weather. Dead heading keeps them looking attractive and the plants stay low. The flowers make sweet little arrangements and even just a few, in a small bottle, look pretty. I would not be without these plants in my Midwestern garden. Most varieties are not especially long lived, however, but that is okay as then one can always be tempted to try new varieties that come on the market. Common names are cheddar pinks, clove pinks, maiden pinks, and gillyflowers.

The common European marigold, (like the Mexican variety), is justly popular because it is easy to grow, and pests don't like it. It was first mentioned by the old-time herbalists in 1578, quote, "It has pleasant and bright shining yellow and orange single-petal flowers." It was used by herbalists during the times of ancient plagues, and the petals of the flowers were dried and sold for use in making broth in the winter. The flowers have also been used to add yellow color to cheese in times past.Native to southern Europe, the seeds can be sown directly into the soil and germinate easily in sun or part sun. Plants begin to flower in June and continue till frost. Gather seeds when they ripen in August and September.Some people use the flowers to treat the stings of wasps and bees and also to treat warts. Large flowering marigolds (those that originated in Mexico) are usually yellow or orange, and French marigolds are smaller and orange/brown in color.All types of marigolds last well as cut flowers, but it is best to remove all of the leaves below the water line in a vase as they otherwise develop an unpleasant odor.Marigolds are excellent plants for children to grow when they begin gardening as they are likely to grow well even with sporadic watering.Note: The European variety (about 20 species) is daisy-like in appearance, and the botanical name is Calendula officinalis with the common name of Pot marigold or English marigold. The name calendula comes from the same root as the word "calendar," signifying that it blooms almost all year in zones 6-10.The Mexican variety is larger and many petaled, and its botanical name is Tagetes, and they are unrelated to the European varieties.

The most commonly grown deciduous magnolia in the Lower Midwest is Magnolia x soulangiana, usually referred to as the saucer magnolia.Hardy in zones 4-9, it may be a shrub but usually is a tree about 20-25 feet tall with a rounded crown. It usually develops a number of trunks and may over time even grow 30 feet tall and as wide.It blooms before it leafs out, and the pale pink blossoms look striking against the rough grey bark. However, about one in three years the late spring frosts ruin the bloom and the flowers turn brown. I am told there is a hybrid called ‘Forrest's Pink’ that will make new buds if the old ones are ruined.I think ‘Spectrum’ and ‘Galaxy’ bloom a little later also, which provides more reliable bloom.There are actually a large number of more modern hybrid cultivars now available and some produce flowers in other shades such as white, rose, magenta, burgundy, and purple.The genus name honors Pierre Magnol, a French botanist (1638-1715). Since it is a long- lived tree, think carefully before you decide where to plant it as it needs space for its branches, which cast a lot of shade when it matures. This allows for a large shade garden beneath it.I have a tree that is 83 years old and underneath its sheltering arms I grow winter aconite, Virginia bluebells, perennial geraniums, ferns, hellebores, bleeding heart, wildflowers, epimediums, and for-get-me-nots. The birds love to perch above.

The earliest iris to bloom is the petite Iris reticulata.The reticulated irises have a fibrous network on the bulbs that is similar in pattern to the markings on a giraffe, which is also described as reticulated, “like a net.” These earliest blooming iris have 3- to 6-inch stems and they bloom with the crocus. To display the blooms indoors, I use a tiny bottle for each one.There are also intricate patterns on the small petals, and their beautiful colors—maroon, purple, lavender, white, and yellow—delight winter-weary eyes.Plant the little bulbs in drifts in the fall. Since they dislike wet feet, a good spot for them is in a sloping or raised bed so there is good drainage.Iris is the sacred flower of the Goddess of the Rainbow, and iris means “eye of heaven.” (It is also the name of the center of our eyes.)After their spring bloom, Iris reticulata bulbs should be given an application of granular fertilizer, sprinkled over them, and their leaves should not be cut down. They are hardy in zones 5 to 9 and are long lived if they are not disturbed. Plant these little bulbs 3 inches deep.These darling little miniature iris are the start of a progression of flowers of varying types of plants in the family Iridaceae. They are followed late in the spring by the taller Siberian iris.Try to grow as many different types of iris in your garden so that you can have a progression of these blooms until June each year. The deer leave them alone![Note: Try the following : Iris histrioides ‘George’ Zones 3 to 8, which are dark purple with gold marks, and Iris histrioides ‘Katherine Hodgkin’ zones 5 to 8.]Reference: Perennials Short and Tall: A Progression of Flowers for your Garden by Moya Andrews and Gillian Harris, Indiana University Press (2008), Page 67.

David Hosack was born in New York in 1769 and in a book about him by Kerri Miller, she states that he is responsible for the establishment of New York’s first botanical garden. There was an interview by Victoria Johnson on NPR that drew my attention to this. Hosack was a brilliant medical scientist who focused on medicinal plants. The Bartrams, earlier on, grew medicinal plants in their gardens in Philadelphia, but Hosak was the first to grow these plants in North America for scientific research purposes.Dr. Hosack studied medicine in both London and Edinburgh and then returned to North America to teach and practice at Columbia College in New York City. In London he had been trained in the classification of plants using the system developed by Linnaeus in the 18th Century. Miller describes in her biography how Hosack met Joseph Banks and other famous plant scientists in London in the early 1800s and became knowledgeable about European plants and their medicinal properties.When he returned to New York he realized the need for a public garden as a research facility for medical scientists and their students. He even wrote to President Jefferson to ask for plants gathered by the Lewis and Clark expedition. Later he became the personal physician of Alexander Hamilton and Aaron Burr. He used his own money, and later went into debt, to buy and maintain 20 acres on Manhattan Island to grow plants, including many natives that had not been known abroad, in order to study and teach students about their medicinal effects. His garden was the first scientific garden established on our shores.This is Moya Andrews, and today we focused on David Hosack.

In 1785 William Cowper wrote:Who loves a garden, loves a greenhouse too. Unconscious of a less propitious clime There blooms exotic beauty, warm and snug While winds whistle and the snows descend.In 1974 Maya Angelou said, "Nature has no mercy at all. Nature says ‘I’m going to snow. If you have on a bikini and no snowshoes, that’s tough. I’m going to snow anyway’." And there is a Chinese proverb that makes many of us smile:If you would be happy for a day, get drunk. If you would be happy for a week, take a wife. If you would be happy for a month, kill your pig. But if you would be happy all your life, plant a garden.And Jude Patterson wrote, “In winter, when roots and seeds sleep under the crusted snow, the gardener is an artist hatching ideas for the coming season.” But my personal advice to you in January is to be careful of all of those tempting offers that arrive in catalogs in the mail this month, as well as all of the seductive offers to order plants online. We are all so eager to have flowers on our gardens again, that we are susceptible to all of the plant offers that bombard us. But it really is too early to start ordering plants—January is too soon!—so try, if possible, to exercise some restraint.