Re: street trees?

Hi Silke,

Yes , the planes are beautiful trees, but again, many people get health problems caused by the fruits and not the pollen of the flowers. 
"hairs on the fruits cause yellowish clusters that we observe in the street.
These hairs, real microscopic needles are planted in the mucous membranes of the nose and along the eye causing episodes of rhinitis and conjunctivitis."
Further more, the city employees are doing vacuum once a week all along winter time because leaves are falling till now. Our planes are just now with no leaves on them.

Chantal Guiraud
Montpellier, France
> 
> Here in Málaga (HDA zone 10b) jacaranda look spectacular in blossom, although the dropped blossom on the pavement can look messy.
> 
> The paseo del Parque leads through one of the most important subtropical gardens in Europe and is lined with 100-year-old palms (I think Phoenix canariensis); the city is fighting a running battle to keep the red palm weevil (Rhynchonphorus ferrugineus) at bay. This plague has spread all along the southern Spanish coast after being introduced from Egypt in the mid-1990s and treatment is expensive, so many municipalities are finding it difficult to allocate funds in these times of economic crisis. Newer plantings now tend to use Washingtonia robusta, which it appears has been immune/resistant to the weevil thus far.
> 
> Running parellel is paseo de las Curas, with enormous plane trees, which are also planted in two avenues in the city's seigneurial eastern district of Limonar. I love them, they are beautiful things and provide welcome shade. In autumn, the fallen leaves seem to drop overnight and disappear -- I expect tyhe city's cleaning department must take the credit for this enormous amount of work, although I don't know how they manage the instant co-ordinated leaf drop! When the trees were apparently threatened with removal a few years ago, groups were formed to save them, so they are popular.
> 
> The Alameda, the main avenue, has a double row of huge centenarian Ficus microcarpa; also evergreen, enormous canopies of welcome shade.
> 
> But the winner by a country mile is the traditional favourite here in Andalucía: the bitter (Seville) orange: compact, evergreen, glossy dark-green leaves, with extremely decorative, large orange fruit in winter that nobody seems to pick. Not much call for such a huge glut of marmalade!
> 
> Last autumn the city council contracted a firm of tree experts to study existing street trees and recommend indigenous trees for future use, apparently the first time they have approached the matter scientifically rather than, as previous replies have said, choosing trees based upon council members' fond memories or trees seen in foreign climes. The article is here, for those who read Spanish: http://www.diariosur.es/20130901/local/malaga/parques-jardines-ultima-plan-201309010043.html
> 
> S.
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> ________________________________
> From: Sean A. O'Hara <sean@gimcw.org>
> To: Medit-Plants listserv <medit-plants@ucdavis.edu> 
> Sent: Thursday, 30 January 2014, 6:57
> Subject: Re: street trees?
> 
> 
> 
> Hello Marianne! -
> 
> Schinus molle has been planted as a street tree locally.  I love the tree but some complain of its messiness.  It bole also ultimately grows quite wide and disrupts pavement.  As I mentioned in one of the other posts in this thread - this species is part of my own nostalgia, so perhaps I al more willing to forgive it any failings!  ;-)
> 
> 
> 
> Seán O.
> http://about.me/seanaohara
> 
> 
> On Wed, Jan 29, 2014 at 7:34 AM, Marianne Beith <mcbeith@gmail.com> wrote:
> 
> How about Schinus molle (Peruvian pepper tree) or Schinus terebinthifolius (Brazilian Pepper tree), the former being used frequently here in Mallorca lining village streets.  They do need regular pruning to keep from growing too tall though.  
>> 
>> Marianne Beith
>> Mallorca, Spain
>> 
>> On 28 Jan 2014, at 21:23, "Sean A. O'Hara" <sean@gimcw.org> wrote:
>> 
>> 
>> Pamela - 
>> 
>> We saw a number of planting of Melia in village squares in France and Italy.  A very tough tree, but with grace and beauty.  Birds love the berries also.  Old homesteads here 'about often have a token tree - the beautiful compound leaves were placed between linens to repel insects (it is related to the neem tree).  There were some very old trees in an area not far from me that were threatened with removal due to the widening of a street, and a whole group organized an effort to save them!
>> 
>> http://gimcw.org/plants/Melia.azedarach.cfm
>> 
>> 
>> 
>> Seán O.
>> http://about.me/seanaohara
>> 
>> 
>> On Tue, Jan 28, 2014 at 10:33 AM, Pamela Steele <pamela.steele@re-taste.com> wrote:
>> 
>> 
>>> I think Melia azedarach is beautiful street tree not too big, decidious 
> and very elegant.  I also like Jacaranda mimisofolia in the street which is 
> used a lot in the Costa Blanca and specifically in my own town of Jávea.  
>>> Pamela Steele
>>> Costa Blanca
>>> -----Original Message-----
>>>> From: seanaohara@gmail.com [s*@gmail.com]On Behalf Of Sean A.  O'Hara
>>>> Sent: 28 January 2014 17:02
>>>> To: Medit-Plants  listserv
>>>> Subject: street trees?
>>>> 
>>>> 
>>>> Hey folks - 
>>>> 
>>>> A post about the qualities of Rhus Lancea on  the Facebook group got me thinking about street trees.  So many people  have asked me about street trees over the years - a hard thing to choose, what  with local ordinances, overhead wires, pavement surrounds, abuse by any  passerby, cars, etc.
>>>> 
>>>> I live in a pretty urban environment, so the  conditions are even more extreme - e.g. lots of dust/soot from busy paved  street.  In such a setting, I usually suggest a deciduous tree so that  there is fresh foliage each year (instead of a build up of dirty, sooty  leaves), though large falling leaves can cause their own  headaches.
>>>> 
>>>> Wondering what experiences you may have with street  trees - what works well and why.  What settings you've seen them  in.
>>>> 
>>>> Roots are often seen as a problem - some species are  notorious surface rooters.  But many with otherwise well behaved roots  seem to exhibit problems lifting pavement.  My own belief is that  irrigation techniques tend to encourage this problem.  When the old  available water is at the surface (due to shallow watering techniques) then  the roots grow there, and ultimately enlarge to cause problems.  Deep  irrigation send tree roots deep into the soil, where they can also find other  water sources.
>>>> 
>>>> I had a direct experience with this when asked to  weigh in on choices of street trees in a neighborhood I lived in years  ago.  I encouraged everyone on my own block to irrigate deeply (a  continuous tiny trickle of water over a couple of days, then no water for two  weeks or more).  Other blocks practiced a variety of techniques, based on  each owner's opinion.
>>>> 
>>>> That single block of trees, even today (a  couple of decades later) established themselves very well, are healthy,  straight, and with well-behaved roots.  Other plantings in the  neighborhood exhibit the usual spotty survival rate, with several mis-shapen  trees (or even some replacement due to failure).  It was such a profound  learning experience.
>>>> 
>>>> 
>>>> 
>>>> Seán O.
>>>> http://about.me/seanaohara
>> 
>
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