I took the image at the top of the post at the home of Nancy, one of our RG volunteers. This is the "tumbleweed onion" (Allium schubertii). Planted as a bulb in October, it has enormous, 12-15" diameter bloom "spheres" in June. It is only 18" tall but packs a lot of punch. I feel it is marginally hardy and/or very touchy in terms of becoming perennial. We've had it bloom at Rotary Gardens but not last more than 2 years in the ground. What an "other wordly" look though!
Sunday, June 15, 2008
Whittling Away...
I took the image at the top of the post at the home of Nancy, one of our RG volunteers. This is the "tumbleweed onion" (Allium schubertii). Planted as a bulb in October, it has enormous, 12-15" diameter bloom "spheres" in June. It is only 18" tall but packs a lot of punch. I feel it is marginally hardy and/or very touchy in terms of becoming perennial. We've had it bloom at Rotary Gardens but not last more than 2 years in the ground. What an "other wordly" look though!
Friday, June 13, 2008
Another Frantic Friday
Today was another crazy Friday. We came in to a light mist which didn't stop us from hitting the ground running with hauling plants out for our work day, planting, weeding, tidying, path clean-up, etc. We had plenty of rain yesterday thru last night so have to deal with the repercussions around the gardens. Marv and Terry went and picked up our annual vinca (Catharanthus) collection that Marianne is already sorting for planting next week. It sounds like we'll have more flooding soon as some rains from further north make their way down the Rock River thru Janesville. Riverfront businesses including our library are building sand bag bunkers to help prevent the inevitable.
The image to the left is of the arrowwood viburnum (Viburnum dentatum) in bloom. Later this native shrub will develop blue berries (tasty for birds) and sometimes a nice fall color depending on the variety. Mature height can be 8-10' but for those that like a more compact variety, look for 'Little Joe' for half that height with all the same features. Neat, late blooming bulb below. Ornithagalum (forgot the species of this one) has come back for many years for us and has wonderful spires of clear white blooms.
Thursday, June 12, 2008
Doppler Radar - Lots of Action
The image to the left is of an exciting new, variegated lemon basil (Ocimum) called 'Pesto Perpetuo'. I saw mature specimens up at the UW-West Madison Ag Station last summer and was amazed at its perfect upright/rounded shape. It looked like a variegated boxwood from a distance. The uniformity of the plants was amazing and it is truly an "ornamental edible" with a use in the kitchen as well.
Our lime obelisk is quite a focal point in that shady corner. Visitors entering the Parker Center can see this showy obelisk out the windows. We've planted the copper cheese vat that is the container with 'Molten Lava' oxalis and 'Scarlet Pimpernel' caladium. These plants will augment that obelisk and create a real bright spot. With all the rain and moisture we've had this spring, we'll have a easier time maintaining our mushroom collection (joke) than our plants! We are worried about mildew and other fu
ngal issues but will deal with that accordingly....
Wednesday, June 11, 2008
Priority Planting
Tuesday, June 10, 2008
Sunshine Finally Won A Round!
We had lots of sunshine today and I had four groups of volunteers to coordinate. Three of the groups were planting their assigned areas and the other group was clearing spent Allium foliage from an area that we will finish preparing and hopefully plant tomorrow. The gardens were busy with all sorts of tours, classes and seminars. I had to give an impromptu tour today and spent some time laying out and collecting plants for upcoming projects. We have a skeleton crew on Tuesdays but were fortunate to have such great volunteers come in today.
Analogy. If all the spring bulbs are nature's fireworks show, the plant to the right is that exciting end of the show. The foxtail lily or desert candle (Eremurus sp.) is planted in fall as a tuberous root. It is marginally hardy here and really requires perfect drainage. The bloom stalk you see is actually over 6' tall and I've seen them taller than that! Native to Asia, this plant is exciting in June as it closes out the bulb season with the exception of some late Alliums. This plant later goes dormant after the blooms fade and the foliage withers (late July). We've planted hundreds of these and have only established about eight nice specimens that seem to enjoy their location. Research planting methods prior to purchasing this plant (expensive) as there are some tricks.
The image below is another from this past Saturday's work day where the crew was planting our orange and blue theme throughout our "three flags berm" along Palmer Drive. This is one of the most visible berms as it is front and center along the roadway with thousands passing daily. We hope to have a similiarly successful Saturday volunteer work day this weekend (how's that for alliteration?).
Monday, June 9, 2008
We're "Weathering" Along...
Our cottonwood seedlings have already germinated around the gardens and it's a depressing sight to see the "haze" of millions (I am not kidding) little seedlings that will have to be addressed in short order. I spray many with RoundUp and we get them early with hand hoes but they have literally invaded every inch of exposed soil, cracks between bricks and along gravel paths. This is an annual event and we'll get thru it as time allows. Lots of planting on the horizon; tomorrow in fact!
In our climate, I feel the perennial with the longest "bloom window" is the yellow fumitory (Corydalis lutea). In the image to the left, you see many specimens throughout our shade garden. It is only 12" tall with delicate, light blue/green foliage (reminiscent of bleeding heart) topped with yellow blooms from late April until hard frost in October or even November. This plant prefers part shade and tolerates a wide range of soils. It does self-sow readily so you will see colonies forming as the babies emerge. It is easy to "thin the herd" as we do every year. I'm always impressed with this plant and I can take the same picture in the same location in late September and it will look the same in terms of flower power. Highly recommended. Below is a neat shrub called dappled willow (Salix integra 'Hakuro Nishiki') that has whitish, speckled new growth with hints of pink and salmon. Left alone, this shrub can get 8-12' tall. However, we cut it back to 6" every winter and watch the explosion of fresh new growth that will shoot up to 3-4' during the season. We do this "severe cutback" every year to encourage the most colorful growth and to also maintain a more compact size.
Sunday, June 8, 2008
Sunday Showers
I didn't get in to work today but accomplished a lot at home in between showers. I think our Saturday plantings have been watered in sufficiently by now! Tomorrow we'll look for washed out paths and possible tree branches and other debris that needs attention. We have a wonderful group of Master Gardeners (Rock Prairie Master Gardeners) that come in on Sundays to water. Their talents were probably not needed today but these volunteers have really become a huge asset in terms of watering (and allow me to avoid 3-6 hours of watering every Sun. at the gardens!). They are also vital with planting and maintaining the gardens as well as facillitating various special events.


Dick, one of our Grumpies, welded us this new support post for our mailbox. The snowplows of this past winter destroyed the previous mailbox (understandably) due to the volume of snow and ice that had to be removed from Palmer Drive. This post system is industrial and note the two little planters we'll be able to put plants in down low! A local artist friend of Dick's painted the mailbox and we're happy to have it out along our road (even if it doesn't go with the orange and blue theme behind it!). 
Note the Allium 'Globemaster' below which is a real solid perennial for us. While I've seen most of our fall-planted Alliums come back every year, the diameter of the umbel (flower cluster sphere) decreases a little bit each year. These 'Globemaster' alliums below are roughly 5" in diameter. The first spring after planting, they were about 8" in diameter. This subtle decrease has occurred over the past 8 years or so. Mail order bulb catalogs show a picture of this bulb and it's enormous. We don't mind the change and are happy to have early June covered with masses of alliums. Note the Star of Persia (Allium christophii) at the bottom. At 15" in height, the sphere is enormous (8-10" in diameter) and has a "metallic violet" appearance. Once dried, the umbel is a nice contribution to a dried arrangement.
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