“Rock Gardens”

Surface boulder_COS_LAH_7750In the year we’ve lived in our new house, the first on the block, we’ve gained a number of neighbors. Now that the growing season is officially underway, these new yards are being landscaped. And I’m reminded all over again of why, back in 2000, I signed up to become a master gardener.

You see, when we first moved here, I quickly noticed that the major landscaping theme was composed of lawns, junipers, and rocks. Lots of rocks. I became a master gardener volunteer to help people grow more attractive and interesting landscapes. But in spite of all that advice, apparently nothing has changed in the last 23 years.

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Growing Onions

Colorado State Univ. Field DayDo you grow onions? They’re not the most popular crop for the home veggie garden, which is a shame because they’re incredibly easy to grow. Sure, you can go to the store and buy a bag for a pittance, but that’s true for most vegetables we grow. And the flavor of home-grown onions isn’t that different from the ones at the market.  The primary advantage of growing your own onions is that you know exactly what you sprayed them with—or didn’t.

In general, growing onions is as easy as sticking a few sets into the ground in early spring. You can start them from seed, but they take forever to reach transplant size. That’s why many garden centers and mail order seed companies sell bunches of transplants and onion sets.

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Castilleja miniata Paintbrush

Castilleja - Indian Paintbrush__SpruceGrove-Tarryall_20090626_ 0038)The scarlet blossoms really do look like bushy paintbrushes dipped in red paint; they’re hard to miss, even in a meadow crowded with wildflowers. Most of us easily identify these iconic perennials, although we may be a bit confused by the species that bloom in pink, white, and yellow.

Here along the Front Range of Colorado, the most common species of paintbrush is Castilleja miniata, more familiarly known as Giant Red Paintbrush. The one- to two-foot plant is easily identified by its long, unbranched stems lined with lance-shaped leaves. They’re topped with colorful bracts, which are usually divided into threes. These bracts are typically red (miniata means “colored red”) but you can also find blooms in shades of orange, salmon, and pink. The actual flowers are yellowish-green tubes that grow to become more visible later in the season.

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Limiting Factors

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Spring has finally arrived here at 7,100 feet, and I’ve been feverishly planting—move the mulch, dig a hole, dump the perennial out of its  pot and stick it into the ground. Fill in any gaps with leftover dirt, replace the mulch. Rinse, repeat.

As I work around the lawn, adding flowers everywhere I can, I’ve noticed how abysmal my dirt is. Since we added compost, I assume that eventually it will qualify as soil, but right now I’m dealing with lumps of bentonite clay embedded in a deep layer of gritty, coarse sand. The clay was supposed to be seven feet down, but in the process of digging a basement, it got mixed  with the surface layers.

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Keeping Mosquitoes at Bay

mosquitoLast month we learned that the so-called mosquito repellent plants don’t actually keep our yards pest free. Does that mean we have to suffer annoying, itchy welts? Thankfully, there are alternatives. We start by preventing mosquitoes from breeding.

Most of us know that mosquitoes lay their eggs in water. The eggs hatch into aquatic larvae. In as little as three day (depending on the temperature), those larvae become flying adults. The males leave us alone, but the females suck up a gut full of nutrient-rich blood to support egg-laying. And often, that blood comes from us.

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Fabulous Fernbush

Chamaebatiania millefolium - Fernbush_XG_20090720_LAH_7320From a distance, a blooming fernbush (Chamaebatiaria millefolium)  resembles a lovely white lilac bush, but no lilac would be in bloom at this time of year. Growing to seven feet high and wide, these shapely shrubs are covered in upright sprays of showy white flowers from June through August. Individual blossoms are reminiscent of single roses, and attract bees and butterflies. Come autumn, the flowers are replaced by russet seed heads.

A closer inspection reveals reddish peeling bark and the aromatic, finely dissected leaves that give Fernbush its common name. Even in our cold climate, these leaves stay on the bush for most of the year; branches are bare for a mere three to four months each winter. Fall foliage is an attractive copper color.

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Beyond Spring

Malus 'Branzam' Brandywine_Crabapple_DBG_LAH_5147Most landscapes look terrific in May and June. The leaves are fresh and new. From pink crabapples to purple lilacs, it seems as if everything is in bloom. The contrast with the lifeless browns and grays of winter is enough to send you cavorting across the  glowing, emerald green lawn.

It’s tempting—irresistible, really—to rush to the local garden center and buy everything with flowers on it. I’ve been subjected to Facebook photos of flowers since March (I have a lot of friends in California), and finally it’s our turn!

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Garden Advice: Companion Planting

carrots-tomatoes-401Do carrots really love tomatoes? Do beans and onions hate one another? The internet (and my bookshelf) is full of anecdotal advice about which crops we should plant together, and which ones we should not.

There’s a well-known book that’s been around for ages called Carrots Love Tomatoes: Secrets of Companion Planting for Successful Gardening, by Louise Riotte. It offers page after page of “facts” about companion planting. That sounds really helpful, and I was ready to try it all, but unfortunately, when I dug in online, I discovered that there is very little science behind the advice.

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Planting a Tree

Improper staking_LAH_5226How do you plant a new tree? Most people know to dig a hole “twice as wide and deep as the root ball” (according to the label I found hanging from the branches), then stick in the tree, making sure the roots are well buried. Amend the backfill with plenty of compost, pile it over the roots and tamp it down firmly. Finally, securely stake the thin trunk so it won’t wiggle in the wind. Right?

Wrong!

This advice was being questioned as far back as 1980, but it is still widely practiced, much to the detriment of the poor plants.

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Mosquito Repellant Plants? Caveat Emptor

mosquitoI sometimes wonder why God made mosquitoes. They’re so… annoying! No one enjoys getting bitten. It’s more than just the never-ending itch—they carry some very nasty diseases such as malaria, yellow fever, and chikungunya. Even here in the U.S. we’re at risk of West Nile, dengue, viral encephalitis, and now zika.

Lavendula - Lavender @DianeBrunjes-GlenEagle 22july05 LAH 003rMy Facebook feed is suddenly overflowing with lists of plants that supposedly repel mosquitoes. Just plant these flowers and herbs and your yard will be pest-free! Or, as one post on Pintrest claimed, “Plant a Mosquito Control container so you can sit and unwind in the evenings.” Unfortunately, anything that simple raises a red flag for me. Can controlling mosquitoes really be as easy as planting marigolds and lavender? It took some research to get past the hype, but I eventually found some scientific studies that look at this question.

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