April 7, 2008

Saxifraga in Tufa Rock

High alpine saxifrage growing in Tufa rock

I have a long history with Saxifraga, or saxifrages. 30 years ago, while in high school, my first summer job was not scooping ice cream at Cape Cod, or cutting lawns, nor flipping burgers; rather, it was kneeling on burlap for what seemed like the entire summer, extracting grass and weed seedlings with tweezers and fingertips, from an extensive collection of "silver saxifrages" at a well known local estate designed by Fletcher Steele, that of a philantropist, Helen Stoddard.

After three years of maintaining Mrs. Stoddards amazing collection of these alpine plants, I expected that I might have had my fill of these alpine plants, but rather, the opposite has happened. Now in my 40's, I continue to collect these alpine treasures, but it has only been recently, I admit, that I have been able to actually keep them alive! Not the easiest plants to please, these alpione plants, native to the highest peaks of the alps and European mountain ranges, require somewhat specific conditions to thrive, mainly, boyant cool air, fast draining soil which retains moisture at the same time ( not the easiest condition to achive) and bright light, if not sun, without burning.

Attempting to grow these Saxifrages in normal garden conditions will result it unsatifactory results. They grow best in Tufa rock, but this is a material which is practically impossible to find ( tufa is a porous, limestone rock, perfect for so many alpines which love to grow in it), or you could try them in pots and containers, troughs, if you will, which contains a fast draining potting soil.

Thanks to Wrightman Alpines, the plants can now be purchased already growing in Tufa rock, which has redefined how my collection looks. I urge anyone in the Northern USA to try these, and elsewhere, search for these tiny buns at online and local nurseries and try taking cuttings, to plant in Tufa rock ( drill tiny holes, fill with Tufa rock powder, in June, and sit back and wait). Here are some photos of the denser growing forms of Saxifraga, a genus with 430 species of all sizes, with the higher alpine forms such as the kabischia types most suited for Tufa rock growing. Tufa rock keeps these lime lovers dense, tight and hard, which shows off their lime encrusted foliage, as well as seems to give them the hard growing conditions which seems to stimulate blossoming.

Kabischia Saxifrages surviving a New England winter in Tufa rock

April 3, 2008

Comparing Clivia Blossoms

Various Cyrtanthiflora group blossoms
A decade ago, a yellow Clivia or a variegated Clivia, often topped the list of the most wanted, if not the most expensive plant, on plant collectors lists. Today, yellow Clivia can be found in most any rare plant catalog, and even main stream catalogs retailing for around $20 - $100.

I have been collecting Clivia since the late 80's, and growing them since high school in the 70's ( I still have my original plant), but it wasn't until the late 1990's that I began to connect and trade with enthusiasts on-line, that my collection really began to grow. By 2001, the greenhouse was full of seedlings recieved from friends made on various clivia user groups and boards, as well as from exchanges with many other collectors, as a mini-trend for the plants in combination with the wider and deeper reach of the internet, connected like-minds.

Also in 2001, we first visited Japan, where we wer'e invited to visit Mr. Nakamura's home and Clivia collections, which we're pretty cool, and incredibly inspiring. Clivia are just one of those plants, that are relatively easy to grow, impressive when they decide to bloom ( please don;t write me and ask me how to get yours to bloom!), and they are quite addictive.

Here are just some photos of the first seedlings from 2001 collections, which are beginning to blossom in our greenhouse.

BLOOMING TROUBLE? I am no expert, but I can say that if you are having difficulty getting your Clivia to bloom, here is what happened with me. I always had some plants blooming in the house in March, normal blooming time here, in the North Eastern part of the USA. But there we're years that they never bloomed on time, sometimes waiting for the summer, and other times, waiting until fall.

Once the plants were moved into the greenhouse, they all bloomed at the same time. But some years it would be February, other years, April ( like this year). They are kept quite wet year round, since most are under the benches. Since my greenhouse is kept quite cold in the winter, I would deduce that day-length in combination with temperature is the key, not keeping them dry for the winter, etc. Although, that said, be certain not to keep them too wet, for rot will kill them.

As for being pot bound, either way, I would say it doesn't make a difference in my experience. It appears that a Clivia will completely fill ANY pot with thier thick fleshy roots in no time.

Soil, many collectors swear on using compsted bark, others, orchid mix only. I use whatever I have, since my Clivia are very much like Daylillies, some have even spent a year out of thier potson the floor on the greenhouse, and are still blooming.

NOTE: THe interspecific, or Cyrtanthiflora group types which are those which are crosses between the species, all tend to bloom either in the fall or winter, whereas the Clivia miniata, the large Clivia we all know and love, generally blooms in March in the Northern Hemisphere.

Aren't these blossoms great? It really isn't until you take them off the plant, and place them side by side, that one gets to make comparisons about color and form.

April 1, 2008

Cape Bulbs from seed

Lachenalia aloides var. aloides

Sparaxis elegans

Moraea pritzeliana

Romulea 'Nightshays form"

Romulea australis

Romulua minutiflora

Sand bed in greenhouse with Cape Bulbs