New Advice on Soil Amendments

compost-in-bags-no-label-lowes-cs_lah_5090-1You’re gotten your test results back from the soil lab, telling you to add some organic matter. What’s the best thing to add?

In the past, I’d just bop on down to the local garden center and load up a few bags of… something. Soil amendment, composted manure, planting mix, potting mix, top soil, compost… there are hundreds of products, and the names are pretty random.

So are the ingredients. Since there are no legal standards, these bags can contain whatever the manufacturer wants them to. There’s no labeling law, either. If there’s a label at all, often you’ll see something like, “Contains (peat, forest products compost, and/or compost), wetting agent, fertilizer.” You have no idea if this particular bag has peat or compost, much less what went into that compost. And what’s a forest product? Bark? Sawdust? Squirrels?

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Take the Test!

The sun is shining, the lawn is turning green, and the birds are chirping. In fact, it’s a balmy spring day. Surely there must be something you can do to start your veggie garden! As a matter of fact, there is, but it doesn’t involve a single seed.

If you’re like most gardeners, you’ve never had your soil tested. Every year you dutifully spread a layer of compost and/or manure over your garden, dig it in, and plant. After all, that’s what every book, article, and website tells you to do. You might even add some fertilizer, just to be on the safe side. But if you’ve never had a soil test, you’re flying blind.

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Go for the Green

fraxinus-pennsylvanica-green-ash-cc-2003jul06-lah-003

In honor of today being St. Patrick’s Day, I thought I’d celebrate “green” in the garden. No, I don’t mean about being environmentally friendly, although that’s certainly important. I’m talking about just plain green… as in chlorophyll-laden leaves.

This time of year, I’m pretty frantic for anything green. There aren’t many broad-leaved evergreens that tolerate Colorado’s winters. Even the conifers are more a blackish-olive drab—not nearly as nice as the “pine” of the decorating industry. Cold weather does that to leaves: many junipers turn plum-purple in winter. Leaves should not be that color. (Mahonia wears the same hue, but manages to look more attractive in it.) Hardy ice plant glows red, and ornamental grasses shimmer in copper and gold. Mostly, however, things look dull grayish brown, or just plain dead.

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Timing Peas

pea-vines-home-lahIt’s almost Saint Patrick’s Day, the traditional planting date for peas. Should you sow on March 17?

Not if you live along the Front Range! While St. Patty’s Day may work fine for New England, it’s probably the wrong day to plant for much of the country.

If you live in a warm climate (E.g., parts of California, Florida, and Arizona), you are far too late. Peas should be planted as a winter crop, so they can grow while the weather is cool and humidity is higher.

And if you live here in the Pikes Peak area, mid-March is much too early. Sure, peas planted now may survive and grow and produce a crop. But they may also rot in too-cold soil, waiting for temperatures at which they can germinate.

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Beautiful Edibles

733-lunch-1I love salads. Wash and tear some crisp, homegrown lettuce. Add a few sprouts, some mizuna leaves (mizuna grows exceptionally well in my garden) and other greens. Slice up some green onions, cucumbers and tomatoes, throw in a few flowers, and whisk together a light vinaigrette to pour over the top. Toss it all together, and yum!

Wait, you say. Flowers? You put flowers in your salads?

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Planting Lettuce in Winter

lettuce-bf-2008may30-lah-002Are you staring out the window, watching the snowflakes, and desperately wanting to plant something? Guess what—you can! It may be too early to start tomatoes and broccoli, but lettuce seedlings can handle the cold with a little protection. So pull out the recycled six-packs and potting soil, soak your peat pots, and clear some space on the counter. It’s planting time!

I’ve written several posts about starting seeds (see April 2009 for the basics, or choose “Gardening: Starting Seeds” under Categories, in the upper left of the screen), so I won’t go over all that again. Rather, I’d like to encourage you to push the limits and experiment a bit. Most seed packets contain far more seeds than a home gardener is likely to use, so you can afford to take a few chances.

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“Days to Maturity”

tomatoes-greenhouse-2008sept08-lah-296When can I pick my tomatoes? Will these melons ripen in my short growing season? If I plant these flowers from seed, when will I have blooms?

“Days to maturity” is one of the most important factors in determining what we can grow in our high altitude gardens. Technically, this number tells the gardener how long a particular crop or variety takes, on average, to yield a harvestable crop. However, it’s all a bit fuzzy.

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Give a Harvest of Hope

harvest-of-hope-catalogHave you finished your Christmas shopping yet? Christmas is only two days away! Well, if you’re still scratching your head searching for ideas, I have just the thing for that hard-to-shop-for person on your list. And if you are done with your shopping, may I add one more person for you to shop for—someone you don’t know and will probably never meet?

All during the holidays, garden catalogs have been piling up on my desk. I usually promise myself that I won’t open a single one until I have written all my Christmas thank you notes, cleaned the house, and packed up all the decorations. I know once I start reading about beans and lettuce, I’ll be distracted for weeks.

Except… there is one catalog that I open right away.

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Winter Containers

Containers in winter_DBG_10200118_LAH_6918Winter used to leave a huge hole in my garden. Containers that were once jammed with vibrant annuals were reduced to pots of old potting soil. Flower beds that had hosted brilliant orange marigolds and salmon-pink petunias had become boring expanses of brown dirt. At least I covered the soil with a layer of mulch—shredded leaves, dried grass clippings, pine needles—but it all looked so depressing.

Not any more. A spontaneous trip to the Denver Botanic Gardens last March gave me the inspiration I needed to make my winter landscape far more interesting.

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A Gardener’s Wish List

While I’m on the topic of wish lists (see my previous post), I would be remiss if I left out what the gardener in me would like for Christmas. See, I’m making this so easy for my family!

  1. lettuce-after-hail-damage-home-2008jun04-lah-002No hail. If I had to pick one item, this would be it. How many times have I planted a bed of eager lettuce seedlings that I raised from infancy, only to have them turned into lime sherbet by the next thunderstorm?
  2. Regular, gentle, rainfall. After living most of my life in California, it still seems incredible that Colorado has rain during the summer. But does it all have to fall in a span of five minutes? I’m tired of watching our driveway wash into the culvert, the mulch pile against the fence, and my plants get reduced to stubs. And then, since it all ran off so fast, I still have to water! (more…)