I grow many Arum species in the
Great Central Valley of California. The Great Central Valley flora is nearly
70% non-native invasive plants, all from the Mediterranean or other Mediterranean
climes. We have cool wet winters and dry hot summers. All my Arum species
produce seed, and like Pete said, the fruits hang on for a long time. I have
never seen any birds consume or collect the fruits (our scrub jays are
collectors, hiding acorns and walnuts for later). If the fruit falls on the
ground in summer where there is leaf litter, and afternoon and evening shade the
it will germinate the following March, April or May. The native soils are clay
loams with lots of alkali.
In pots I have also sown the
fruits directly from the parent into loose, sandy soil (peat/sand/pumice) with
lots of leaf litter or compost with the same result.
The species I have grown this
A. dioscoridis dioscoridis
A. palestinum (Mt. Carmel ecotype)
I hope this helps,
D. Christopher Rogers
Senior Invertebrate Ecologist/
P.O. Box 4098
Davis, CA 95616
∙ CALIFORNIA ∙ MISSOURI ∙ PENNSYLVANIA ∙ VANCOUVER
email@example.com [mailto:firstname.lastname@example.org] On
Behalf Of Peter Boyce
Sent: Friday, August 14, 2009 10:28 PM
To: 'Tom Croat'
Cc: Nasja.Grubisic@brodosplit.hr; 'Discussion of aroids'
Subject: Re: [Aroid-l] Advise in planting Arum seeds
the Mediterranean the ripe fruits stay on the peduncle for a long time, and
generally are collected by thrushes or blackbirds (Turdus spp.) late in summer,
as the autumn/winter rains begin. The seed passes through the bird, either via
regurgitation or through faeces, but the important thing is that the red
pericarp and pulpy mesocarp is removed
fruits should be cleaned of the pulp and sown on the surface of a
mineral-soil rich mix and covered to ca. ½ inch with small chippings (1/8-1/4
inch), ideally limestone. Water them well and stand the pot someplace shady.
Keep an eye on water; don’t let them become totally dry, but equally
overwatering is detrimental. They will begin to germinate immediately they
encounter moisture but, depending on the species, will either produce an aerial
shoot (eophyll) soon after germination (most), or will concentrate on
root/tuber production and produce an aerial shoot very early in the new year
(maculatum, cylindraceum, orientale).
From: Tom Croat
Sent: 15 August 2009 11:26
Cc: email@example.com; Boyce (Business Fax);
Subject: Advise in planting Arum seeds
I just returned from a trip to the Balkans and collected an Arum in fruit in
Durres, Albania. Since these berries were mature in the midst of their
dry Mediterranean style summer and if shed directly in such dry conditions
could surely not germinate I am assuming that they must somehow survive without
germinating until the rains begin. Does anyone know what I should do to
get these seeds to germinate? Do they need to be stored? Planted
directly? Treated in any particular way? I would appreciate you
help. Emily is coming in tomorrow to deal with them so if you have some
advise I would love to hear from you.
I have copied both you and Marija Bedalov since I know that both of you have
had direct experience with Arum.
found in this incoming message.
Checked by AVG - www.avg.com
Version: 8.5.392 / Virus Database: 270.13.58/2309 - Release Date: 08/17/09