Tuesday, April 26, 2011

Watering the garden in Central Florida

A commenter asks about watering. There's a very long answer that I have been articulating in my head for a while that involves various ethical and economical tradeoffs. But the short  answer is easy: You need to water as much as the plants need, and more specifically, you probably need to water a lot more than you currently water. Certainly that has been the case for me: Slowly over the past five years I've realized a simple and obvious truth: Plants need copious water to grow well here, with our (sometimes) arid climate, strong sun, winds, and overly-drained soils. It is, in fact, very difficult to over-water here in Florida (barring the mucky soils we have in certain regions in Central Florida). Water is often the limiting factor in a home garden and dooryard orchards. Most people simply don't water enough, and water-deprived plants are unhealthy plants.

Reading gardening books for northerners, you often read about watering "deeply" rather than often. By watering deeply (so goes the thinking), you take advantage of the holding capacity of the soil, and plants can "help themselves" to the residual water in the soil.

Doesn't work here in Florida. Really, no matter how much organic material you rake in, no matter how thick your mulch, you're going to need to water often, and therefore, don't bother watering deeply. That "deep" watering is wasteful: Most of it drains out of our soils. (If you ever look through a microscope at sandy soil, comparing it with more typical, loamy/clayey soils like the kinds we find in the Midwest, the grains of sand look like boulders next to the tiny particles from "real" garden soil. What makes clayey soil clayey is precisely the particle size. The space among those sand boulders acts like a sieve, flushing water from the soil. When we take the kids up north, they are fascinated by puddles because here in Florida, we just don't have many.)

Especially during our peak growing months in spring (March and April), when rainfall is relatively rare, the air is clear, the moisture-robbing winds are brisk, and the sun is strong, you need to water daily, until the root zone is well saturated. Most days, I stick my finger in the ground when I come home around 6. I expect the soil to be dark and moist.

It takes a lot of water to do that during our hot-dry spells.

I use a mix of microsprinklers and conventional sprinklers. The latter are jerry-rigged: I mount Orbit flush-head sprinkler heads onto six-foot PVC risers in the center of my garden: I get very even, quick coverage over a large-diameter circle. I water my main garden bed about 15 minutes every day, mid-morning. My remaining areas are irrigated using Mister Mister system, which lets me water very precise areas, very precisely. I run lines into my pots and use 360° sprinklers under fruit trees, and then position 90° sprinkler heads so beds get watered "from behind"... There are many arid areas in my garden beds where I plant drought-tolerant plants, but they tend to be in the backs and corners of beds.

Look, water in Florida is cheap (too cheap). One day soon, we'll face some serious capacity issues, but not because of my vegetable garden. Blame the resorts with ten acres of St Augustine, exposed to full sun, and the jackasses with an acre of turf in their private residence who run the sprinklers every morning during the rainy season. (I have one of those neighbors behind me.)

If you garden, balancing real ecological concerns and the natural desire for plentiful blooms, fruit and vegetable is tough, but the alternative to watering sufficiently is (obviously) underwatering, which is itself wasteful, as that insufficient water is itself still a consumed resource, but one without the maximum yield (however you figure it). If you plant a rose bush or a squash plant, you basically commit to watering it enough. Otherwise, don't bother planting it in the first place. 

Sunday, April 24, 2011

Pickled baby squash

First peaches, plums of the season


Something to have along with dessert this Easter day. Earligrande peach and Gulf Blaze plum. The peaches are wee, but that's because I didn't cull them this year. No regrets--they ripened very early, likely because they were so small...

Tuesday, April 12, 2011

Growing Snapdragons in Central Florida



usi aluminiu has left a new comment on your post "Snapdragons":

In my garden i can`t grow snapdragons. They need something special or i don`t know, some conditions?



Posted by usi aluminiu to Gardening in Central Florida at 8:58 AM

Snaps are a BREEZE for me... they need abundant sun, well-drained soil (no problems there), and sometimes some support (tho i often let them flop and then they grow bushier). timing is probably the hardest thing--they take FOREVER to grow from seed. 

In my garden, all the snaps you see are volunteers from last year's crop. (Consistent irrigation (not TOO much water) is key here: When they germinate, they need damp soil.) They typically infest beds, and I pull out hundreds of seedlings every year. I also collect seed and plant it in windowboxes in September. They take a hundred plus days to mature... and they stay tiny most of the time. but as soon as the weather warms, they take off. The ones that I plant in windowboxes get transplanted throughout the garden.

My experience: They transplant well, are reasonably low in their water needs, bloom from the beginning of March (earlier, sometimes) until mid-June. SAaved seed is HIGHLY variable. But charming in its outcome: I have some peach and yellow picoteed ones out there now.  

At the end of the season, let the seed pods dry thoroughly before ripping them out... 

Sunday, April 10, 2011

Spring or summer in the Central Florida garden?


The title to this post presents real dilemma. I am sitting in the shade where it is still at least 83° trying to cool off after a morning of picking vegetables and tending my gardens. And on that level at least, it's clearly an early summertime here in Central Florida. We've had abundant rainfall over the last couple of weeks, at least 4 inches. It's seems the rainy season has started early this year after a cold winter. Our spring, in other words, has been cut short on both ends. But the evenings are still dry and cool and the spring flowers are sure bloomy. In the vegetable garden, I'm still harvesting spring and winter vegetables like cauliflower, broccoli and brussels sprouts. This morning I harvested my first small handful of the potatoes. I didn't dig up the plants, I just fumbled around them until I found a good size potatoes. My mother tells me that this is called "scrambling" or "scrabbling" where she grew up in western Kentucky

I tried brussels sprouts for the first time in the winter garden this year. I can't say that I met with a lot of success. They took forever to grow to any good size, and the yield was disappointing, if tasty. I made a simple dish last night of boiled cauliflower and brussels sprouts dressed with a garlicy, mustardy  butter sauce. Tasty.  But, not worth the real estate in the garden when it comes to the brussels sprouts. 

A quick roundup of what's going on in the vegetable garden. The carrots  continue to do well, I still have two long rows of them that need to be pulled sometime before May. I am harvesting the last of the broccoli and cauliflower this week. I planted out the seedlings  in my garden at the end of February and am getting my final harvest in mid April. My squash plants are producing abundantly. The cucumbers are just now starting to set a lot of fruit. Tomatoes are growing vigorously and have a good number of green fruits on them. I might manage a small harvest by the beginning of May, and they'll produce until the beginning of July. (Longer for the small-fruited varieties.) Pepper plants are getting larger although still not flowering. First beans of the season should be ready at the end of this week. Chard and salad greens are still going strong but they will begin to decline by the end of the month. Finally, peaches and plums are rapidly gaining size and starting to color. They might be ready by the beginning of the second week of May.