Cedrus deodara 'Karl Fuchs' / Karl Fuchs Himalayan cedar

Cedrus deodara 'Karl Fuchs' is a large growing, robust selection of Himalayan cedar with remarkable attractive silvery-Blue foliage on layered branching with nodding tips. After 10 years of growth, a mature specimen will measure 10 feet (3 m) tall and 6 feet (2 m) wide, an annual growth rate of 6 to 8 inches (15 - 20 cm).

This cultivar originated as a seedling selection made in the mid 1970s by Günther Horstmann nursery, Schneverdingen, Germany. It is among group of seedlings selected from seed sourced from Paktia provence, Afghanistan. These plants are known for exceptional hardiness and resistance to storm damage. Karl Fuchs is the name of the name of the collector/explorer.

Cedrus deodara 'Karl Fuchs' — a mature specimen in an arboretum setting.
Photo by Bill Barger

Comments

Dianne

When you say a mature specimen will reach 10', do you mean that is the maximum height it will reach? Or will it keep growing taller?

Maxwell Cohn

no, absolutely not! Like all woody plants, conifers will grow at a similar rate for many decades, if not centuries. With that, this cultivar will grow at a yearly rate of 6 - 8 inches for an extremely long time. Unless you're extremely talented with pruners, no conifer will grow to a specific height, then stop (unless of course it's dead).

Sheryl Schulling

For the last couple of years at least that I recall, the branches on the lower half of the tree are very sparse with quite a bit of the pine needles along the branch turning brown. Other parts are green and appear to have a little light green new growth. Do you have any idea what is wrong. I would hate to lose this tree. The top half is beautiful but I'm afraid it might be working up the tree whatever is going on. It gets full sun and is watered regularly, plus I live in the NW, so it's gets plenty of rain. I can't see any signs on the trunk other than cracking bark. Appreciate any help. Thank-you.

Maxwell Cohn

in the NW, cedrus are having a lot of trouble with late spring fungal issues. It's far worse in atlantica, but it shows up in deodara too from time to time.

Cindy Farrar

Is this species named after the German spy Karl Fuchs?

David Olszyk

the species is "deodara" so I don't think that's question you wanted to ask.

Karl Fuchs (1776 - 1846) was a German botanist who also founded the Kazan Botanical Museum in Russia. He is well known to have traveled into the high mountains in search of exceptionally hardy cedars. https://en.wikipedia.org/wiki/Karl_Fuchs_(museum_founder)

Klaus Fuchs (1911 - 1988) was a spy during WWII, specializing in nuclear espionage.

They have nothing to do with each other.

Brock

This article is interesting. It tells one zone it grows in (the coldest?) but not the hottest zone where it will do well.

Daniel Spear

Brook, I grew this cultivar in Southern California where summer temperatures were regularly in the 90s, with the occasional low 100s. They did exceptionally well for me. Of course that is a very dry hot, not humid hot climate. I’m not so certain they would perform as well in high humidity hot summers. It is a stunning tree probably worth trying to grow if you can find one for sale.

Brock

Thank you for your replies and information Daniel and Sara. Humidity is definitely a factor. I recently saw that the Karl Fuchs Deodar cultivar on Monrovia's web site is suited for zones 6-11. Zone 11 is too hot for me to live there humidity or not. I'm in North-central Florida zone 9b which is hot and humid in the late spring, summer, and early fall. Our zone 9 tall varieties of Cedrus deodara grow in well-drained soil. But, they can have dieback at the tops when they are very mature and the ground gets saturated during hurricanes and the rainy season. They are still a beautiful pleasure to have in spite of the very damp climate. (And at least the chance of frequent, large and difficult wildfires here is much less.)
I have a small Deep Cove deodar in an 18 inch pot that has done well for 15 years. I'm also giving some of the newer and smaller varieties a try such as Feelin' Blue, Devinely Blue, and a shorter and more narrow variety of Aurea.
Thanks again.

Sara Malone

HI Brock, unfortunately that is one of the limitations of the USDA zones; they are based solely on average low winter temps. Where are you? Hot does not equal hot - I'm in 9b Mediterranean, which means bone-dry summer air and cool nights, but the SE can have 9b with very humid summer air and warm nights.

Chuck Caldwell

I have two of these trees, planted a little over one year ago. One looks normal with appropriate spring growth, but one looks really weird, with what looks like abnormal growth. The new growth is "clumpy" and has made the top of the tree look like a bushy clump instead of a more spiked appearance. Could this tree have some sort of disease or virus or something that causes this and is there anything oe can do about it. The tree otherwise looks healthy. I could send a photo.
Thank you.

Robert Fincham

It could be insect or winter damage to the leader which has the effect of pruning the top.