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post Digging Deeper - October, November, December 2008 Focus; Penstemon heterophyllus

November 2nd, 2008

Filed under: Uncategorized, Cultivation — Administrator @ 12:28 pm

Name of penstemon species: heterophyllus
Person reporting: Barbara Lewis
Garden location: near Denver, CO, 1 miles from the south Platte River

Garden conditions: Zone 5; soil is alluvial and fairly porous; annual rainfall about 14”

History
After germinating heterophyllus at 70 degrees indoors in early 2007, the seedlings were transplanted (lined out) outside in late March to a somewhat protected outdoor environment. Heterophyllus thrived and bloomed that first year. The plants were beautiful in bloom, with lovely brilliant lavender flowers distributed generously on a graceful, airy, semi-shrub plants which were about 18” tall and in a vase shape.

During that first summer, P. heterophyllus promised to be a prime garden subject; however there was a question about its ability to winter-over because it is native to a warmer climate — the coastal foothills in California from Humboldt County to San Diego. However, because Lindgren and Wilde reported it tolerated temperatures as low as -15° I had a measure of hope.

Heterophyllus seedlings also would need to survive the spring transplanting in 08 (fall transplanting had proven challenging in my garden) . Spring of 2008 arrived in March, cool and damp well into April. Happily, despite winter temperatures as low as -20°F, and only intermittent snow cover, heterophyllus not only survived but looked wonderful in March. Five plants were transplanted in late March, two to imported soil of top soil mixed with squeege (various sized small pebbles) and coarse sand, two also into imported soil, but in shade for a half day and the fifth placed in native soil at the base of a low rock wall serving as a raised bed. The last three plants were watered using soaker hoses; the other two, located on an artificial berm, were hand watered almost daily all spring and through an extremely dry and hot summer. It was not unusual for the plant at the base of the low rock wall to receive almost twice what the others got. Despite these differences, all the plants grew well, thrived and bloomed generously. The two planted in full sun, placed atop an artificial berm, grew taller than the other three.

Garden display: I believe the plants show best when planted in groups of at least two. The plants will show well almost anywhere, including in a border, large rock garden, or wild garden.
Current status
It is now late September, 2008 and heterophyllus has been blooming continuously for well over two months. What better garden plant could a gardener want? And, if the truth be told, I secretly call her “princess.”

  

post Penstemon arenicola - Digging Deeper focus for June - September 2008

June 29th, 2008

Filed under: Uncategorized, Cultivation — Pent Lady @ 6:06 pm

Person reporting: Barbara Lewis

I should add that the description of P. pachyphyllus would be almost identical to that of arenicola.  It blooms a little later.  Pachyphyllus does not seem particular about placement in the garden; I had extra seedlings this spring so placed two in a very dry spot that got less than half day sun; they bloomed and are doing well now, in August. Pachyphyllus is another desirable garden plant.

 

Barbara Lewis

Garden Location: near Denver, CO

Zone: 5

Soil: sandy loam

 

After germination and the growth of three permanent leaves, lined the seedlings out (June 2007) in an area set aside for seedlings. Given shade in decreasing amounts for about a month. Arenicola adapted quickly and grew well in this setting.

 

Arenicola seedlings transplanted into permanent locations in the garden in late March 2008; adapted immediately and put on growth.. Plants sprinkled every day; currently (June 2008) being watered ever 36-48 hours. By 2009 I plan to have decreased watering to every 7-14 days depending on the weather.

 

Planted in groups of two or three. I think they look best in groups. Sites included: top of a berm, side of a berm and base of a raised planter.

 

Of the 45 penstemon species in my garden, arenicola was the first to bloom – third week in April. All the plants put on a beautiful show for about three weeks; their blue color was dazzling. Wouldn’t be without this lovely penstemon.

(Starting in October we will feature Penstemon isophyllus)

 

arenicola anther detail

arenicola anther detail

full plant

arenicola in garden

post New; Artwork on APSDEV.ORG

April 1st, 2008

Filed under: Uncategorized — Administrator @ 6:20 pm

Please enjoy the artwork graciously donated by Cindy Nelson Nold at http://apsdev.org/library/artwork/Cindy_Nelson_Nold/index.html 

post Digging Deeper: A Discussion About One Penstemon Per Month

February 27th, 2008

Filed under: Uncategorized, Cultivation — Pent Lady @ 5:36 pm

DIGGING DEEPER
an online, in-depth discussion of one penstemon every month

Why do we need Digging Deeper? What is this about ?

As you probably know, the American Penstemon Society (APS) interviewed a number of their members in 2007 to learn more about what they wanted from APS. One idea which came up repeatedly was to feature one penstemon in depth in each issue of the Bulletin. (more…)

post Discussion; Penstemon frutescens

February 24th, 2008

Filed under: Uncategorized, Cultivation, Distribution — Administrator @ 11:49 pm

(This is an interesting discussion between Ginny Maffitt and a Japanese member of NARGS who has provided Penstemon frutescens seed to the NARGS seedex. We thought it interesting enough to be included in this blog area.)

Penstemon frutescens white

(more…)

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