It was another cold day but we had a great turnout of volunteers at the Horticulture Center.  Larry H. went out in the gardens to bring in more lights and Pat M. continued to process lights for storage.  Larry O. was both inside and outside and Bill O. helped out with myriad projects this morning and afternoon.  Dr. Gredler worked on more painting and Dick H. had some projects after plowing the 1″ of fresh snow off of our parking lot.  Dave, Jim, Vern, Bob K. and Ron Y. continued progress on the garden art projects.  Marv continued to clean up our indoor tropicals and Gary worked on some office equipment inventories.  Kay finished processing our most recent seed order although the last couple orders should arrive next week.  We also saw Bev D., Dr. Yahr, Cindy B., Rollie, Polly and many others today.

As we prepare for our “Smelly Garden” theme in the Nancy Yahr Memorial Children’s Garden this year, I’m ordering seeds and plants of many fragrant annual selections.  Above is the “lady of the night” (Brunfelsia gigantea) which has an unbelievably sweet fragrance.  Scent in the garden is such a wonderful addition and is frequently not considered or appreciated for its value!  While there are certainly trees, shrubs and hardy perennials that offer scent (particularly emitted scent!), the blooming (and thereby scent) “window” can be quite narrow. Relying on seasonals and tropical plants with strong summer scent will help with the continuation of olfactory appeal in your landscape.  Included here are just a smattering of the many varieties that can offer some nice smells in your landscape.  Keep in mind that fragrant plants are loosely grouped in to two categories; those that emit a scent in the air and those that need to be touched (tactile engagement) to enjoy the scent (basil, thyme, etc.).  All of these are “emitters” with the exception of the popcorn plant below which should be rubbed to release the scent.  We’ll have well over 150 varieties of fragrant perennials and annuals in our Smelly Garden this year!

chocolate cosmos (Cosmos atrosanguineus) – true to it’s name!
 popcorn cassia (Cassia didymobotrya) – smells like buttered popcorn!
 sweet sultan (Centaurea imperialis ‘Imperial Bride White’) – sweet!
criss-cross plant (Cladanthus arabicus)
 angel’s trumpet (Brugmansia sp.)
 angel’s trumpet (Datura meteloides ‘Evening Fragrance’)
 fragrant carnation (Dianthus caryophyllus ‘Grenadin King of Black’)
 heliotrope (Heliotropium arborescens ‘Alba’) – vanilla!
heliotrope (Heliotropium arborescens) – some blue selections are not fragrant so check!
night phlox (Zaluzianskya capensis) – sweet night bloomer

An entirely underused perennial is the wood betony (Stachys officinalis) which really is a tough and durable plant with plenty of visual appeal.  The variety ‘Hummelo’ can be seen above and below and is one of the most popular varietal selections out on the market (sometimes sold as Stachys monieri).  See further below for my favorite: ‘Pink Cotton Candy’!  Native to grasslands in both Europe and Asia, this plant can tolerate average, well-drained soils and is drought tolerant once established.  Don’t plant this species in overly damp soils though.  Most varieties will reach a height of 15″-18″ in a season and the bloom period extends almost two months in the summer with scattered blooms late in the season.  A wide range of bees and butterflies will visit wood betony in bloom.  This perennial prefers full sun (best) or part shade and also features wrinkled leaves rarely affected by insects or diseases.  We first planted this perennial in our Scottish garden where it has thrived in part shade.  These “bottlebrush” like blossoms (mostly shades of pink and purple) make this plant appear more like a salvia than the close relative of wood betony; lamb’s ears (Stachys byzantina).  This is also a great plant for combining with other neighbors!

Today was a bit warmer than yesterday although the cold spell will return shortly.  Tonight we have our Volunteer Soup Dinner which is a fun event we started many years ago.  We typically have two or three of these over the winter months to connect our volunteers, talk about what’s happening out in the gardens and we also will potentially recruit some new volunteers as well.  Our Volunteer Committee has done a nice job putting this event together.  I’ll do a presentation that will include some highlights of trip to Denver last summer for the American Public Garden Association Conference where I also saw some neat gardens.  Larry O. worked on various indoor projects today while Larry H. went out in the gardens to retrieve lights.  Bob K. continues to do a nice job rearranging the carpentry area at the Horticulture Center for maximum room.  Vern popped in for some carpentry work and helped Bob K.  Kay was in for more seed processing as we get ready to distribute seeds to our growers soon. We also saw Big John, Terry, Bev D., Dr. Gredler and many others today.

 Stachys officinalis ‘Hummelo’
spring foliage clumps of Stachys officinalis
 Stachys officinalis ‘Pink Cotton Candy’
Stachys officinalis ‘Pink Cotton Candy’

Stachys officinalis ‘Pink Cotton Candy’
 Stachys officinalis ‘Pink Cotton Candy’
 Stachys officinalis ‘Pink Cotton Candy’
 Stachys officinalis ‘Pink Cotton Candy’
 Stachys officinalis ‘Purple’ (above and below)
 
Today was painfully frigid with temperatures well below 0 degrees F.  We didn’t have any activity out in the gardens but the Horticulture Center saw a lot of volunteers and related action.  In the office, Gary worked on labels, Janice worked on the Spring Plant Sale (Mother’s Day weekend) and Kay processed seeds and prepared labels for our growers.  Cindy B. was in later to help with processing incoming seed orders.  Pat processed lights from the Holiday Lights Show for storage while Dr. Gredler did some more painting.  Vern, Dave, Jim, Ron Y., Dick H. and Bob K. all worked on our carpentry projects with very evident progress.  Del was in to help tidy up and Larry and Bill had many tasks as well.  Maury was back and running errands for us and we also saw Rollie, Big John, Mark S., Mary W., Shirley C. and many others.
 
The “blog focus” today is on garden sages (Salvia officinalis) which are true “ornamental edibles” with culinary use (seasoning) and certainly foliar beauty.  The image at the top is a hodge podge of the varieties ‘Aurea’, ‘Purpurascens’ and ‘Tricolor’ although they are also featured further below.  Salvia officinalis is listed as a zone 5 perennial for hardiness and while we have seen it come back after milder winters with ample snow cover, we typically plant it as an annual for instant impact.  The silver forms (including the “straight species”) are showy, particularly in the evening garden.  In our summers, all of these selections will usually get 15″-18″ in height and you wont see blooms.  The foliage is dynamite and we use them as bedding plants with plant groupings or as specimens in borders or containers.  We’ll have all three of these at the Mother’s Day weekend Spring Plant Sale which also features a wide range of vegetables, herbs, perennials, shrubs, etc. 
 
Salvia officinalis ‘Berggarten’
 Salvia officinalis ‘Berggarten’
 Salvia officinalis ‘Berggarten’
Salvia officinalis ‘Sage of Bath’
 Salvia officinalis ‘Purpurascens’
  Salvia officinalis ‘Purpurascens’
 Salvia officinalis ‘Tricolor’
Salvia officinalis ‘Tricolor’

 Salvia officinalis ‘Tricolor’ with Salvia officinalis ‘Aurea’
 Salvia officinalis ‘Aurea’
 Salvia officinalis ‘Aurea’ with Salvia officinalis ‘Purpurascens’
 Salvia officinalis ‘Iceterina’
 A showy container of foliage with (left to right), ‘Tricolor’, ‘Aurea’ and ‘Purpurascens’

Today was FRIGID with no activity out in the gardens (except for hungry deer).  While the weather outside was frightful, the inside was so delightful (and productive).  Pat M. continued to process lights while Dr. Gredler painted more trash bins with a fresh coat of grey/blue paint.  Ron Y. and Dave were putting primer on their carpentry projects which will become the “soon to be announced” garden art projects for this year.  More to follow on that annual event very shortly.  Vern, Jim, Bob K. and Dick H. were all working on carpentry projects as well.  Larry O. was here briefly and we saw a couple others as well.

Any time I do a presentation regarding the shade garden, I include the yellow fumitory (Corydalis lutea).  This perennial has thrived for us and has been a colorful component in many of our shade and part shade gardens.  All of these images (most from RBG) will do credit to the beautiful flowers and clean foliage of this European native.  The blue-green foliage (three-lobed leaflets) is reminiscent of bleeding heart (Dicentra sp.) or even columbine (Aquilegia sp.).  Of all of our perennials (literally, all) in the garden, this one has the longest bloom period which will start in May and end in early October.  They are “self-cleaning” so simply continue to shed old blooms and produce new ones.  These plants prefer rich, moist soils and will never thrive in dry soils.  Full shade to part shade are preferred but with ample moisture, I’ve seen them do well in more sunlight.  Soil drainage is important as yellow fumitory will resent wet winter conditions and may disappear.  This species is hardy to only zone 5 so keep that in mind.  When happy though, this plant will reseed prolifically although seedlings are easy to remove or relocate.  The image below shows some “advantageous reseeding” throughout open gaps in our shade garden.  There were only three plants installed here five years before the photo so you can see how it spreads out.  Beautiful!  At 15″ tall, this tough perennial should be included in your shade garden palette and as long as you keep it happy, it will do the same for you!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

It was a cold day outside with wind chill temperatures below 0 degrees F.  Needless to say, we didn’t have anyone out in the gardens but the progress with taking down the Holiday Lights Show (HLS) has gone very well over the last six weeks.  It’s hard to believe that last year we had hardly started take down efforts because of the consistently frigid temperatures.  I’d estimate that 50% of the show is down but we still have many displays, etc. that are frozen in the ground.  I was able to continue seed ordering today and am finalizing a couple presentations including one for the RBG Spring Symposium entitled Garden Inspirations: The Spice of Life.  Held on March 21st (9 am – 3 pm), this event will feature Peter Hatch (retired Head of Gardens and Grounds at Thomas Jefferson’s Monticello) and Kyle Cherek (host of Wisconsin Foodie on WPT).  Space is filling fast for this event so check it out on our website!  Janice came in for various duties including more preparations for our Spring Plant Sale (Mother’s Day weekend!).  Pat was in to process lights and we saw a couple others today.
The blog today features the annual black-eyed Susan vine (Thunbergia alata) which has always been a great performer for us at the gardens.  This vine, native to Eastern Africa, does well in our hot summers and will typically get 6′-8′ in one season.  The blooms are reminiscent of the black-eyed Susan with many having yellow or orange flowers with a dark center.  Above is the variety ‘Orange Beauty’ which is quite vivid in the landscape.  Although this vine has naturalized in warmer climates, it’s a true annual for us and is an excellent twining vine for smaller structures in full sun and with decent soils.  The 5 petal flowers run the range of yellows, oranges, pink, near red and white.  There are an unbelievable amount of colors right now including mixes.  Some have the dark center and some varieties are without that dark throat (or “eye”).  You can find a wide range of these in seed catalogs and some of the fancier new ones are vegetatively propagated so can be sought and bought as plants.  Some fun varieties can be seen below.
 ‘Susie Orange Clear’
‘White with Black Eye’ (above and two below)

 

 ‘Arizona Dark Red’
 ‘Lemon A-Peel’ (above and two below)

 

unknown orange variety
great “short-statured” climber! (above and below at RBG)