In the course of the discussion, I mentioned my favorite garden plants for the San Francisco Bay Area and a listener asked if I'd post them on this blog. So here we go.
Dustin also mentioned his favorite plants but even though he's the professional nurseryman, I think my picks are better so I'll list mine first.
All my comments pertain best to climate conditions in the San Francisco Bay Area, where there's little or no frost.
Bougainvilla, Spectabilis. 15-20 foot tall, drought-resistant when established, and truly "spectabilis."
Bougainvillea, James Walker. More open form that Spectabilis but the color is super--the hottest pink.
Rose, Black Magic. The best garden rose for cutting. This gorgeous flower (and yes, most of them look that good) lasts almost two weeks in a vase. It's mildew-resistant and so in the Bay Area, doesn't need to be sprayed. It is, however, a tall, gawky plant. And if you want long-stemmed single roses, you need to disbud--that is, pinch out the side flower buds as soon as you see them.
Zinnia, Magellan Coral. (available in six-packs for just a few bucks.) These are annuals but flower machines, blooming nonstop on compact 12"-tall plants from May through November.
Meyer Lemon. These are sweeter than standard lemons but they ain't oranges. In addition to the good fruit, the 5' tall by 8' wide shrub is quite ornamental. That picture is a realistic image of how prolific it is. Do remember that all citrus are very heavy feeders--That means that an orange, lemon, or grapefruit tree with a four-foot spread, it needs about three pounds of heavy-nitrogen fertilizer every year, divided into three doses: perhaps April, July, and September. My guest recommended using Maxsea acid plant food. Other experts recommend using any old high-nitrogen fertilizer, even lawn fertilizer, which is much cheaper.
Poppy, Drama Queen. Surreal 4" flowers on a 4' tall plant. If I were making a movie about a utopian future, this would be part of the landscape. The problem, alas, with poppies is that they bloom for just a few weeks and then look like crap for the rest of the year. So you might want to buy a 4" pot of it and one of Poppy Naughty Nineties mentioned below from Annie's Annuals, let 'em bloom and when seed pods form, harvest the seeds, save 'em in dry place, then plant 'em in 3-4" pots in November or December and come spring, you'll have brand new plants plus plenty to give away.
There are other terrific plants I didn't have time to mention:
Argyranthemum, Comet Pink. These are classic daisies but in clear pink, in profusion, constantly for eight months in a row. Best of all, they completely cover the 2-foot wide symmetrical mound. By November or December, they get leggy, so take cuttings, dump the plants, and in early spring, plant the rooted cuttings.
Geranium, Calliope Dark Red. (sold at Home Depot as Big Red.) These are too big for flower pots. They can get to be 2 1/2 feet in diameter in just months. But if you have the room, this is the best geranium. It is a true brilliant red. Not dark as its name says, just a solid rich red--no orange tones like the usual geranium.
Impatiens, Xtreme Lavender. (if your area doesn't get downy mildew). There are many other great impatiens in the Xtreme series and the Accent series, but I find this color particularly attractive. And the plants are vigorous, quickly growing into a 8"-tall mound.
Rose, Day Breaker. This rose is special because it has it all: floriferousness, health, attractive foliage, on a four-foot plant with shiny leaves. And in the Bay Area, roses bloom eight months out of the year.
Tomato, Early Girl. I've tried every darn tomato that's claimed to be the best-tasting: Brandywine, Cherokee Purple, Big Beef, Better Boy, and Park Whopper, and in the end, at least here in Oakland, Early Girl is always the best-tasting. If you like very small cherry tomatoes that do tend to crack, even better tasting is the yellow Sun Gold.
Kumquat, Fukushu. Whether or not you like the taste of kumquats, this is the most ornamental plant I can think of. In China, it's often grown in pots as seen here, but can, of course, grow in the ground in the Bay Area.
Viola, Denim. This is my winter savior. When everything else is dull, ratty or dead, this is producing flowers like this on a disease-free, 8" plant. Available in six-packs for just a few bucks.
Now, let's turn to the recommendations of the guest on my radio program, Dustin Strober.
Rose, Double Delight. Yeah, it has fragrance but it's gawky and mildew-prone. A bad pick, Dustin.
Poppy, Naughty Nineties. Yes, it's great. Almost as good as Drama Queen.
Alonsoa Meridionalis (Apricot or Red) I hadn't heard of this one but it sounds like a winner--a three-foot tall plant covered with bloom for a long season. Available at Annie's Annuals.
Tibouchina. The flower is a gorgeous and unique royal purple, which cover 6-8 foot shrubs for months at a time.
A caller mentioned tuberous begonia. A fabulous plant, many of which trail and so are perfect for a hanging basket--if it doesn't get destroyed by mildew.
And finally, three that I think are overrated
Lilac. Blooms a few weeks and then for the rest of the year, it's a gawky shrub.
Iris. Blooms for two weeks and then, yeah, it has, year-round, decent lance-shaped leaves, even variegated, plus it's drought resistant, but nah.
Primrose. There are thousands of types, but I'm talking about the most common ones, the ones they sell in the supermarket. They bloom for a few weeks in the winter, get damaged by rain or squirrels, and then, it's to the garbage with them. Not worth buying. You want winter blooming on a compact plant? Try the aforementioned Viola Denim.
As always, I welcome your comments and questions.