Transvaal Daisy

80307There is some controversy about the identity of the flowers that Micky Mouse picks at the porch to present to Minnie Mouse when she answers the door. Some insist that they are Transvaal daisy, Gerbera hybrida. When they are not in black and white, the substantial daisy flowers are cartoon hues of yellow, orange, red, pink and white, sometimes with chocolatey brown or black centers.

Transvaal daisies are always available as cut flowers, but bloom best in cool spring and autumn weather in home gardens. Most garden varieties have single flowers on bare stems. Most cut flowers are semi-double. Double flowers that resemble zinnias, and spider flowers that resemble spider mums, are rare. Coarse basal foliage gets almost a foot high and a foot and a half wide.

Because the foliage is so vulnerable to snails, Transvaal daisy is usually grown in pots rather than in the ground or immobile planters. Besides, potted plants can be brought into the home or put in prominent spots while blooming, and then put out of sight between bloom. Transvaal daisy wants partial shade, regular watering and occasional feeding. It can take full sun exposure if not too hot.

Perennials Can Divide And Conquer

10810Along with all the bare root fruit trees, roses and cane berries, nurseries also stock bare root perennials like strawberries, asparagus, horseradish and rhubarb. They are so easy to plant while dormant. They recover from transplant through spring, and by summer, should be growing as if they had always been there. Although, if they had always been there, they might be crowded by now.

Yes, many but not all perennials eventually get crowded. Strawberries spread by runners, so are easily plucked and transplanted to avoid overcrowding, as well as to propagate more productive plants. Asparagus are variable, so may not get crowded for decades. Horseradish and rhubarb may not mind getting crowded, but could be more productive if individual plants have their space.

For example, crowded horseradish plants produce many small roots. If dug, split apart, and replanted with more space between individual plants, the individual roots get much larger. Separating the roots, which is known as ‘division’, also produces many more new plants. Mature rhubarb plants may not mind being crowded, but are often divided simply to propagate new productive plants.

Division of these sorts of perennials is typically done while they are dormant through winter. If that sounds familiar, it because it is the same reason why these sorts of perennials are available as bare root stock. They get processed while they are unaware of what is happening, and wake up in their new and better situations. Many defoliate while dormant. However, most are evergreen.

Ornamental perennials like lily-of-the-Nile, African iris, New Zealand flax, society garlic, torch lily, lily turf and acorus grass are all good candidates for division if and when they become overgrown. So are most aloes, some terrestrial yuccas, several ferns and some of the more resilient clumping grasses. Agave pups can be dangerous, but really should not be allowed to get too crowded.

Division might be as simple as taking a few pups or sideshoots from a large clumping plant, or as involved as digging an entire large plant to divide each individual shoot. More often, large plants get dug and split into a few smaller clumps of many shoots. New plants should be groomed of deteriorating foliage. The long leaves of New Zealand flax should be cut in half to avoid desiccation.

Snowdrops

80221Where winters are more wintry, garden enthusiasts get to brag about their snowdrops as they emerge and bloom through melting snow. Diminutive white flowers against a backdrop of white snow may not look like much to us. We have more colorful flowers through winter, without the snow. Their kind of snowdrops, Galanthus specie, need more winter chill than they would get here anyway.

We have our own kind of snowdrops though. Leucojum aestivum does so well without significant winter chill that it can naturalize, and sometimes shows up in well watered gardens and riparian areas without being planted intentionally. Leucojum vernum is similar, but blooms with only single or paired flowers, rather than three or more small and pendulous flowers on each arching stem.

The rubbery leaves are about half an inch wide and a foot tall. They stand rather vertically, and can get nearly twice as tall if they need to grow through groundcover. The flower stalks are about the same height, and with the weight of the drooping flowers, might lean a bit outward from the foliage. Each flower has six white tepals with a yellowy green spot near the tip. All plant parts are toxic.

Candelabra Aloe

70201As a group, aloes really deserve more respect. Many will naturalize and thrive with only occasional watering through summer. Candelabra aloe, Aloe arborescens, wants a bit more water than most other aloes, but not much. It looks like a sensitive jungle plant, but is surprisingly durable, and very easy to propagate. Any pruning scraps can be plugged wherever new plants are desired.

The foliage alone is striking. Some might say that the loosely arranged foliar rosettes are sloppy. Others might say they are sculptural. The long and curved leaves are outfitted with prominent but soft marginal teeth. Some specimens have narrower leaves that are almost curled. ‘Variegata’ is striped with creamy white. Mature plants may form dense mounds more than six feet high. Hummingbirds and bees really dig the flashy bright reddish orange floral trusses that bloom on tall stems in winter.

Bulbs Are Not Finished Yet

41015thumbIt might seem creepy to think about what spring bulbs are doing right now out in the garden. Like victims of a horror movie, they were buried in shallow graves last autumn. They were not dead though. They were undead but merely dormant. While no one can see what they are up to, they disperse roots and begin to push new foliage up to the surface of the soil. Some might bloom soon.

Now it is getting to be time for summer bulbs. Unlike spring bulbs, summer bulbs do not prefer to hang out in the garden through the cool and rainy weather of winter. If planted too early, they can start to grow prematurely, and could potentially get damaged by frost. If planted much too late after winter rain, they will need to be watered more carefully while young, and are likely to bloom late.

Just like spring bulbs, most summer bulbs are really corms, rhizomes, tubers or tuberous roots. Only a few are actual bulbs. Although they are very different physiologically, they perform the same function. They store resources from a previous season through dormancy in order to sustain growth for the next season. Some summer bulbs bloom more than once annually or with many blooms.

Dahlia, canna, crocosmia, hardy orchid (Bletilla) and the old fashioned big white calla are some of the easier to grow summer bulbs. Dahlia is the most colorful, but blooms late in summer or early autumn, and might only perform well for a single summer. With regular watering, canna can grow like a big weed, but in a nice way. The others can grow well enough to get invasive over the years.

Gladiolus and lily will probably bloom for only one summer, but are so colorful that those who enjoy them do not mind. Tuberous begonia is fussier, so is usually grown in pots. Allium, astilbe and maybe liatris have potential to thrive and multiply in the right conditions, but more often bloom for only a few years. Small colored callas are unpredictable too. They are showy but rarely prolific.

After bloom, deteriorating flowers should be pruned away to conserve resources while lingering foliage recharges bulbs for the next winter. This process is known as ‘deadheading’. Gladiolus, lily and any others bulbs that bloom only once obviously need to be deadheaded only once. Dahlia, canna and others that bloom over an extended season will want to be deadheaded a few times.

Torch Lily In Fire Season

61214Okay, so this is not really the time of year that they should be blooming. Torch lily, Kniphofia uvaria, should bloom in the middle of summer. However, without watering, naturalized plants bloom when the weather prompts them to. Some wait out the warm and dry summer weather to bloom as soon as they get dampened by the first rains. Others bloom in spring, before things get too dry.

Flower stalks can get almost five feet tall, but are more typically about three feet tall. Small tubular flowers are arranged in dense conical trusses on top of these stalks. From the bottom to the top, red flower buds bloom orange, and then fade to yellow, and fold downward against the stalk. Different varieties bloom with more or less of these three colors, and at different times of the year.

The grassy foliage is not much to look at without bloom. By the end of winter, it can look rather grungy. It fluffs back nicely in spring, sort of like overgrown daylily foliage. Overgrown plants, or maybe just a few rhizomes, can be divided anytime. However, they should probably be divided just before the end of winter so that they can enjoy late rain, just before their spring growing season.

Coneflower

71129Known more as a medicinal herb, and by its Latin name, coneflower or Echinacea, is a delightful prairie wildflower that works just as well in refined home gardens. It blooms in summer and again in autumn, although autumn bloom can be inhibited if plants are not groomed of deteriorating stems from the previous bloom. Like related gaillardia and rudbeckia, coneflower is a nice cut flower.

Flowers start out like any other daisy flower, but then fold back with the long ray florets hanging downward around the more rigid centers of darkly colored disc florets, forming cones. Flowers can stand almost three feet high, mostly on unbranched stems. Many popular varieties stay lower. Leaves and stems are somewhat hairy or raspy. Old varieties were mostly purple or lavender. Newer varieties can be orange, yellow, red, pink, white or green. Big plants can be divided after autumn bloom, or in spring.

Society Garlic

71025Some flowers are better left in the garden rather than cut and brought in. Society garlic, Tulbaghia violacea, looks like it would be an ideal cut flower, with nice bare stems. The aroma suggests otherwise. It smells something like a strongly aromatic combination of onion and garlic. Even in the garden, it might be a good idea to keep it at a distance. Deer and rabbits do not mess with it.

Society garlic is sometimes known as pink agapanthus because it has similar foliage and flowers, only much smaller. The tiny flowers are really more lavender pink than pink, and bloom in round clusters on stems about a foot and a half tall in late summer or early autumn. The narrow leaves are only about a quarter of an inch wide, almost grassy, but more rubbery like those of agapanthus.

Mature plants form dense clumps of foliage at least two feet wide. Variegated plants stay much smaller, but are also very likely to revert to green (non-variegated) growth, which if not removed, overwhelms and replaced variegated growth. Society garlic is very easy to divide for propagation. It likes full sun or slight shade. Although somewhat drought tolerant, it prefers regular watering.

Dracaena Palm

71018Dracaena palm, Cordyline australis, is not a palm at all. It is more closely related to yuccas. (Incidentally, a few yuccas are also inaccurately known as palms as well, but that is another story.) The simple specie that grows taller than a two story house is rare nowadays. It develops a high branched canopy of evergreen olive drab foliage. The three inch wide leaves are about three feet long.

Modern cultivars stay significantly shorter, with somewhat shorter and less pendulous leaves. Some are nicely bronzed or purplish. Others are variegated with creamy white, pale yellow or pinkish brown. Trusses of minute flowers that bloom in early summer are not much to look at, and drop sawdust-like frass as they deteriorate. Bloom might be greenish white or blushed, and then fades to tan. Most modern cultivars do not bloom much, or may not bloom at all. The gray trunks have an appealingly corky texture.

Dwarf Pampas Grass

71004Modern garden varieties of pampas grass found in nurseries are generally non-invasive. Their flowers are described as ‘sterile’, and therefore unable to produce seed. What that really means is that they are exclusively female, and unable to produce seed without male pollinators. However, they have the potential to be pollinated by naturalized pampas grass, and sow a few hybrid seed.

Of course, if naturalized pampas grass (Cortaderia jubata) are already in the area, a few tame dwarf pampas grass, Cortaderia selloana ‘Pumila’ will not make much of a difference anyway. They have the same elegantly cascading foliage and boldly fluffy flowers in the middle of summer, but on a smaller scale. The long and narrow leaves might stay less than five feet tall. The white flowers might stay below eight feet tall. Unfortunately, the leaves can easily cause nasty paper cuts!