Yucca whipplei

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Tim Ingram
Title: Member
Joined: 2011-04-27
Yucca whipplei

Following Rick's suggestion I'm putting a series of photos of Yucca whipplei as it throws up a flower spike in our garden. The plant is relatively young, only 7 or 8 years from seed, and I hadn't expected any flowering for quite some time yet. Unfortunately it is one of the forms that doesn't produce offsets so this flowering will be a glorious finale! So here it is on 22/4, 25/4 and 28/4... how high will it get?!

Hoy
Hoy's picture
Title: Member
Joined: 2009-12-15

Tim wrote:

Following Rick's suggestion I'm putting a series of photos of Yucca whipplei as it throws up a flower spike in our garden. The plant is relatively young, only 7 or 8 years from seed, and I hadn't expected any flowering for quite some time yet. Unfortunately it is one of the forms that doesn't produce offsets so this flowering will be a glorious finale! So here it is on 22/4, 25/4 and 28/4... how high will it get?!

Hope you get a  huge batch of seed! Or is it self incompatible?

Trond
Rogaland, Norway - with cool, often rainy summers  (29C max) and mild, often rainy winters (180 cm/year)!

DesertZone
Title: Guest
Joined: 2011-08-20

Tim wrote:

Following Rick's suggestion I'm putting a series of photos of Yucca whipplei as it throws up a flower spike in our garden. The plant is relatively young, only 7 or 8 years from seed, and I hadn't expected any flowering for quite some time yet. Unfortunately it is one of the forms that doesn't produce offsets so this flowering will be a glorious finale! So here it is on 22/4, 25/4 and 28/4... how high will it get?!

WOW...your garden is amazing. :)

Dry garden, little irrigation, 9" precip

Shoshone Idaho USA. Zone 5b-6a

Hot and dry in the summer, cold and snow in the winter.

RickR
Title: Moderator
Joined: 2009-09-21

Wow!  :o  I hadn't realized the girth of that stalk before! 

It's going to be gigantic!

Rick Rodich    zone 4a.    Annual precipitation ~24 inches
near Minneapolis, Minnesota, USA

Cockcroft
Title: Member
Joined: 2010-01-27

Here are a couple of pictures from my sister's acreage in San Diego, California.  A gorgeous plant -- and yes, I collected a lot of seed and sprouted a whole pot of seedlings, most of which I gave to Rick Lupp.   :)

Claire Cockcroft
Bellevue, Washington Zone 7-8

RickR
Title: Moderator
Joined: 2009-09-21

The color is gorgeous, Claire!  Wow!

Rick Rodich    zone 4a.    Annual precipitation ~24 inches
near Minneapolis, Minnesota, USA

Hoy
Hoy's picture
Title: Member
Joined: 2009-12-15

RickR wrote:

The color is gorgeous, Claire!  Wow!

Just the colour? I think the whole plant is marvellous!

Trond
Rogaland, Norway - with cool, often rainy summers  (29C max) and mild, often rainy winters (180 cm/year)!

Weiser
Title: Member
Joined: 2009-12-04

Tim wrote:

So here it is on 22/4, 25/4 and 28/4... how high will it get?!

I've had various yucca species send boom stalks twelve foot tall. (3.5meters)

Tim wrote:

Unfortunately it is one of the forms that doesn't produce offsets so this flowering will be a glorious finale!

I don't have die back after blooming of my yuccas. You may find that they will add new side shoots however.

Hoy wrote:

Hope you get a  huge batch of seed! Or is it self incompatible?

Likely hood of getting viable seed is almost impossible without hand pollination. It's not so much a question of being self incompatible as being pollinator specific. Yuccas in nature are pollinated by very specific moth species. This is a very interesting co-evaluation and co-dependance. here are a couple of articles for those who want to know more.

http://waynesword.palomar.edu/ww0902a.htm
http://www.emporia.edu/ksn/v41n2-june1995/introduction.htm

From the High Desert Steppe
of the Great Basin and the Eastern
Escarpment of the Sierra Nevada Range
Located in Reno/Sparks,NV  zone 6-7
http://www.flickr.com/photos/sierrarainshadow/
John P Weiser

Tim Ingram
Title: Member
Joined: 2011-04-27

Claire - I didn't realise that the flowers could be so strongly coloured! It increases my anticipation of the flowering even more. Graham Stuart Thomas in his classic book 'Perennial Garden Plants' described Yucca whipplei as 'One of the most wonderful plants in the world' and that picture really shows why - it must be amazing to see in the wild.

I may have a go at hand pollinating if I have a tall enough stepladder!

Dr. Timothy John Ingram
Faversham, Kent, UK
I garden in a relatively hot and dry region (for the UK!), with an annual rainfall of around 25", winter lows of -10°C and summer highs of 30°C.
 

Mark McD
Title: Moderator
Joined: 2009-12-14

Cockcroft wrote:

Here are a couple of pictures from my sister's acreage in San Diego, California.  A gorgeous plant -- and yes, I collected a lot of seed and sprouted a whole pot of seedlings, most of which I gave to Rick Lupp.   :)

Yowsa, simply fantastic :o :o :o

Mark McDonough
Massachusetts, USA, near the New Hampshire border USDA Zone 5
antennaria at aol.com
 

Tim Ingram
Title: Member
Joined: 2011-04-27

A quick update on Yucca whipplei as of today. The flowering spike is now showing signs of the floral structure to come. Will it show any colour in the flowers? I wait with bated breath.

Dr. Timothy John Ingram
Faversham, Kent, UK
I garden in a relatively hot and dry region (for the UK!), with an annual rainfall of around 25", winter lows of -10°C and summer highs of 30°C.
 

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