Posts Tagged ‘freeze’

Snap Goes the December Cold Weather

Thursday, December 3rd, 2009

This morning I ventured into the garden to see what might be available to harvest for our weekly food bank donation. Even our hardiest kales are slowing production this time of year, and I didn’t expect to find much for this, our 26th week in a row donating weekly.

Early December Food Bank Donation

Early December Food Bank Donation

As well, I didn’t expect to find quite as crunchy, rock-hard, frozen ground. Yep, the cold snap is here & the garden is seizing up because of it. The sun is shining, but the ground is freezing. The weather reporters are even starting to threaten flurries this weekend and possibly a real snow event in the Seattle lowlands next week. As a longtime Seattlite, I’ve learned to “believe it when I see it”. I’ve also learned to get ready for just about anything. And, if you haven’t already winterized your garden, I encourage you to do so.

If you’re growing edibles, even hardy winter edibles like kale and broccoli, be sure they’re protected from freezing temperatures.

First Hoop House On Raised Bed

Be sure to shut your hoops in the cold!

If you have them inside a greenhouse, under a hoop house or inside a cold frame, most winter-hardy edibles should continue to thrive in temperatures hovering around freezing. If they aren’t protected, get out and harvest them asap or risk losing them in times of cold. A few of the exposed chard leaves I cut this morning were fairly frozen, but they’ll still make a great wilted greens side dish tonight. A few more nights out in that weather and the leaves will be completely shot though the plants may re-surge in spring.  I find chard, lettuce and bok choi the most tender of the winter veggies in my own garden.

If you’re maintaining a worm bin, don’t forget to check on their habitat. They’re probably fairly sluggish and in need of very little food right now. But, they do need a good layer of insulating leaves, shredded paper, straw or other bedding material to keep them from freezing. If you’re having an extra chilly season, consider starting up an indoor bin to keep some of your population fat and happy in the kitchen, pantry, cellar, garage or other protected location. Last winter I put together an indoor bin in 30 minutes, for under $20. Perhaps right now I better get that one rev’d up again before it freezes again tonight!

Looking for other garden winterizing ideas? Read on! (more…)

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Is Your Garden Ready for a Freeze?

Friday, November 13th, 2009

The cold wind blowing and the churning furnace pouring out warm air woke me early this November morning. Rain is hammering out of the sky, blown in circles by heavy winds near the planet surface driving it noisily into window panes.

Frozen Branches

Frozen Branches

And, weather reporters are warning snow may follow the morning downpours. Although I doubt we’ll see snow in the city, these reports — coupled with the ice we’re seeing on early-morning windshields — reminds me to get a few last minute freeze-proofing chores done this morning.

Hopefully, these tips will help you get ready as well. Who knows? Now that I said I doubt it will snow, it probably will send down a few flurries around town just to prove me wrong. (more…)

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Freezing Weather Kills All Garden Pests & Weeds!

Monday, December 22nd, 2008

Sorry to disappoint you, but freezes don’t kill all the garden insects. I lied. Still, some of the flora and fauna pests took a beating this week. And, unfortunately, others may be trying to make your home their home. Despite the freeze, critters are buggin’ out there!

Adult slugs are probably done for the season, but their eggs are laying dormant waiting for the temps to get to around 40F before they burst forth to forage for food among our snow-tortured, blackened plants. Root weevil larvae is resting quietly in dormancy, deep in the soil where it is unlikely to freeze. (And knowing those suckers, it’s unlikely that a freeze would take them out anyway.)

Abandoned Papery Hornet Nest in Winter

Abandoned Papery Hornet Nest in Winter

Bee nests, like this hornet nest, should be vacant after a deep freeze. And, the bees won’t repopulate it next year. Taking them down to explore with kids is fun — if the wind hasn’t blown them away already. Only approach them if you KNOW the weather has frozen and the nest is abandoned. And, as much as you might think of hornets as a pest, remember they have lots of beneficial purposes in the garden too. Plus, they aren’t aggressive so long as you don’t attack their homes!

And, a freeze isn’t going to do a darn thing to stop weed seeds from sprouting. Seeds can remain frozen for years and still remain viable. So, unfortunately, we’ll all be weeding next spring (or even sooner if the weather gets back to normal).

So the good news is, adult slugs and other bugs are probably dead and gone. The bad news is your garden is going to face a resurgence after things melt and we get back to our temperate Seattle winter. But, perhaps when those slug eggs hatch they’ll starve unless they decide to start snacking on emerging shot weed. Now wouldn’t that be a coup d’etat in the garden?!

And, rodent pests are particularly invasive during this weather. Likely, they’re moving into our homes, autos and garages seeking food and shelter from the storm. Make sure your house is sealed up tight. The last thing you want to deal with is rats, mice or squirrels taking up residence! Not only will the adults survive happily in your attics and crawl spaces, but so will their children, grandchildren and so on…

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Why Rhododendron Leaves Roll Up in Cold Weather

Tuesday, December 16th, 2008

As temperatures have plunged into the 20s (or lower) and we’ve bundled up and watched the snow fall from our heated indoor perches, garden plants are left to fend for themselves day and night under blankets of ice and snow and amid desiccating winter winds. As the soil begins to freeze up and water uptake becomes more difficult for roots and as the dry, cold air above ground begins to sap moisture from plants, rhodies and many other plants take precautions to conserve their moisture.

Briefly, plants take up moisture in root systems and transport the water upward through roots, trunks, branches, stems and leaves. And, through the underside of leaves, water is released through leaf stomata. As water is released through the stomata, more water is drawn upward toward that same stomata. (The entire process is more complicated than that, but you get the basic idea, right?)

When a plant is faced with environmental stresses that may cause it to release more water than it can take up, which would lead to dieback in the plant, the plant will close its stomata and essentially “shut down the factory” living on reserves until the weather either warms (or cools) to a friendly temperature. Then, the leaves unroll (or in hot weather they may “unwilt”), the stomata open and the factory process of transporting water and photosynthesizing resumes.

Rhodie Blooms & New Leaves in May

Rhodie Blooms & New Leaves in May

So, don’t worry about those curled up, frozen-looking rhodie leaves. They should be just fine. You may see some frost burn later, but odds are the plant is doing what it needs to do to take care of itself while the weather outside is frightful. By spring, new leaves and beautiful blooms will unfurl.

(Oh, and in case the teaser on hot weather and wilted leaves left you wondering…a plant that will commonly “wilt” its own leaves on a hot days, despite sufficient soil moisture is the lovely hydrangea. As soon as the sun sets and the temperatures cool down, they perk right up again. Ah, to have a hot sunny day right now, right?)

Have any other garden concerns during this cold season? Please write in, and we’ll do our best to help you help your garden during this unusual Pacific Northwest cold snap.

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