Makris Garden - 5889 Sierra Grande - Bodega Bay
| Monterey Cypress - (Cupressus Macrocarpa) | Emerald Green Thuja - (Thuja Occidentalis) |
| Wheeler's Dwarf Pittosporum - (Pitto. Tobria) | Royal Robe Potato Bush (Solanum Rantonetti) |
| 'Aztec Plum Magic' (Verbena) | Salvia |
| Sungold - Golden Sunset (Coleonema) | Mexican Feathergrass |
| Spanish Lavender - Madrid Purple | |
| Phorum Hybrids | Per-Santolina Incana 'Nana' - Dwarf Lavender Cotton |
| Myoporum - Front Door | |
| Tulbaghia Violacea - Silver Lace (Agapanthus) | Osteospermum White |
| Europspect Shrub Daisy |
Contact Nick - Email or 707-875-9249
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Monterey Cypress - Cupressus Macrocarpa
Problem Overview - recently
completed a new home project on the coast of Northern California, that included the Sonoma
County mandated requirement for 40+ new trees on what was formerly pasture land
overlooking the ocean.
The trees (5 gallons when planted) have been in the ground for almost 2 years and have not
progressed very well. They are (were supposed to be) Macrocarpa Cupressus or Monterrey
Cypress (MC). Photos below.
As part of my investigation of this problem (more in a moment) I tried to identify them as
truly MC and not some other variety. I have several other of MC trees that came from the
wild that are on the same drip system, some older and larger and some smaller and younger
and those trees are all doing fine. The trees in question all have a smaller than pinhead
white spot (that is easily scraped off with an exacto knife) on each of the sections of
new growth and that remain there until the growth dies - as all new growth on these trees
does.
At present, there is only new growth on the top of the trees (most are about 3+' tall). A
neighbor recently planted 300+/- 1 gallon trees on his acreage and all are taller and most
are healthy and without the white spots.
So, a couple of questions:
Are the white spots indicative of a variety of Cypress or is it indicative of the problem
from which they are suffering.
Personally I think there are multiple considerations that are contributing to the problem.
Note the first photo below. On the surface, this tree (sacrificed and in a
bucket) seems to evidence similar symptoms to the pictured trees further down, but is
missing the galls and resin seepage. The interesting thing about the root ball is
that it is no larger (was a 5 gallon and could be smaller now) than when planted two years
ago and appears to be root bound.
The trees have all (both the problem trees and the others referred above) been drip
irrigated with the same twice a week application of about 1.5 gallons per. I changed
the emitters at the end of last summer to provide a more circular pattern and they seemed
to do much better until the fall rains began and I turned off the drip system - they are
now the worst I have seen them. Of course, this is the point in time that the trees
become dormant for winter. I don't think they have had too much water, but I could
be wrong. I have examined the roots of two other of the trees - one as described
above (root bound?) and the other (with the gall and resin symptoms) had a normal looking
root structure.
On many of the trees the branches at the juncture of the trunk have a slight thickening
(galling).
Finally, the neighbor's trees are not bitten/munched on by our herds of local deer, but
these trees all seem to be enjoyed by the deer as do my other trees from other sources.
Here is a list of possible contibuting factors:
Fungi, Deer (both nibbling and
velvet rubbing), Wind and Method of planting (hole too small for 5 gallon?)
The photos below are of various trees.
Appreciate any and all help.........
Many thanks, Nick
Contact Nick - Email or 707-875-9249
Phomopsis Description - Excellent
Another Phomopsis Description - Also Excellent
Cypress Problem - Arborists Forum Discussion
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| Name: Monterey Cypress - Cupressus Macrocarpa | |
| Type: Evergreen | |
| Shade/Sun exposure: Love the sun | |
| Wind:Can handle the wind, once established | |
| Water: Mixed information??? very drought tolerant (though does well with watering, too). They grow even in dry and infertile, acid or alkaline soils, in full sun. It requires regular water. Water during dry spells in the first few years. Older trees are drought-tolerant. | |
| PH: 4.00 to 7.00 | |
| Other Links: Good Monterey Cypress write-up | |
| Diseases: This tree is susceptible to coryneum canker fungus, for which there is no cure. Control of cankers consists chiefly in cutting out and burning affected parts. Badly infected trees may require complete removal. | |
| Pests: Cypresses may be infested with aphids, mealybugs, caterpillars, and scale insects. All can be controlled by washing with soap solution or with appropriate chemical spray. | |
| Deer favorites: Deer like the new young shoots and like to use the small branches/trunk to rub the velvet from new antlers. This causes almost certain death to young trees/limbs. |
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| Name: Pittosporum - Wheeler's Dwarf | |
| Type: Low Compact Shrub - blooms in the spring - best appearance when not trimmed | |
| Shade/Sun exposure: Full sun ok | |
| Wind: | |
| Water: Regularly | |
| PH: Doing well in a neutral 7.0 and a little mulch when planted. | |
| Deer favorites: Deer like the new young shoots as you can see by the wire screen. |
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| Name: Emerald Green Thuja - (Thuja Occidentalis) | |
| Type: Evergreen - 10-20' depending on variety | |
| Shade/Sun exposure: Full or partial sun | |
| Wind: Highly tolerant | |
| Water: Drought tolerant | |
| PH: Very adaptable | |
| Deer favorites: Not | |
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| Name: Royal Robe Potato Bush (Solanum Rantonetti) | |
| Type: Dark purple flowers in Summer - 6-8' Tall and Wide - Prune regularly during winter | |
| Shade/Sun exposure: Full sun | |
| Wind: Highly tolerant | |
| Water: Regularly during the first season | |
| PH: Very adaptable | |
| Deer favorites: Not |
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| Name: 'Aztec Plum Magic' (Verbena) | |||||||||||||
| Type: Dark purple flowers Spring to Fall - 18-24" Tall & Wide - Perennial Ground cover. Verbenas are mainly grown for their remarkable length of bloom with most blooming from spring until close to frost if trimmed back once or twice in mid summer. Flower color ranges from white through pink, red, lavender, blue and purple. | |||||||||||||
| Shade/Sun exposure: Full sun and uncrowded growing conditions | |||||||||||||
| Wind: Highly tolerant | |||||||||||||
Water: Regularly during the first season.
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| PH: | |||||||||||||
Problems: Verbenas can suffer from a variety of problems, They must have
well-drained soil. They will not tolerate overcrowding with poor air circulation, shade or
soil that stays overly moist.
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| Deer favorites: Not |
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| Name: Sungold - Golden Sunset (Coleonema) | |
| Type: Juniper | |
| Shade/Sun exposure: Half to Full sun | |
| Wind: Highly tolerant | |
| Care and watering: Sungold is a dwarf golden threadleaf cultivar. It is truly
one of the most interesting plants to have in the landscape or garden. Like most everyone
else, when I walk past a Sungold Cypress in the garden, I have to stop, admire, and gaze
in awe at its incredible beauty. Its golden evergreen scale-like needles cling to weeping
or semi-weeping branches. In summer it is very green, having good winter yellows if placed
in a sunny location. New spring growth also emerges bright yellow. (Better and more
consistant gold color then the regular gold cypress) They do not like wet or poorly draining soils. They're somewhat drought tolerant once established, but will need moist well draining fertile soil for the first couple years to properly establish, & even then their drought tolerance shouldn't be too awfully tested during long rainless summers. Most of its many dwarf cultivars do not produce cones, but 'Sungold' when very mature might do so. With moderate pruning 'Sungold' can be restrained to about any small size required, but if left to go wild could very slowly but eventually reach eight feet of height, & considerably wider, with flattening top. An easy to grow and easy to maintain evergreen. Excellent mop-like form that makes a nice accent for the border or small hedge. Full sun. Slow grower to 5 to 6 feet tall, 7 to 8 feet wide Care Instructions Follow a regular watering schedule during the first growing season to establish a deep, extensive root system. Provide well drained soil, rich in organic matter. Feed with an acid fertilizer after bloom. Keep roots cool with a thick layer of mulch. |
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| PH: A little on the acid side | |
| Deer favorites: Not |
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| Name: Spanish Lavender - Madrid Purple | |
| Links: Link to a good definition with photos The Allure of Lavender | |
| Type: 18-24" | |
| Shade/Sun exposure: Full sun | |
| Wind: Highly tolerant | |
| Water: Drought tolerant once established - needs little water and little fertilization | |
| PH: 6.5 and 7.5. If the soil is too acidic the Lavender will not thrive. If the soil is too alkaline, the nutrients are 'tied' up in the soil and the plant cannot use them. Yellowed growth can be indicative of a soil that is out of balance. Adding compost can help to balance the PH. | |
| Notes: Plants do best with a good pruning about four or five weeks into the bloom cycle, discouraging these large Lavender bushes from becoming untidy and encouraging a second sweep of blooms. | |
| Deer favorites: Not |
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| Name: Per-Santolina Incana 'Nana' - Dwarf Lavender Cotton | |
| Links: Good description | |
| Type: 8-11" high - spread is about 1 meter | |
| Shade/Sun exposure: Full sun | |
| Wind: Tolerant, but like some shelter | |
| Water: ??Drought tolerant once established - needs little water and little fertilization | |
| PH: Acid, Alkaline and Neutral | |
| Care: Follow wregular watering schedule during the first growing season to establish a deep, extensive root system. Feed with a general purpose fertilizer before new growth begins in spring . For a formal appearance , shear annually after flowering. | |
| Propagation Methods: Seed and semi-hardwood cuttings | |
| Notes: Generally pest and disease free. | |
| Deer favorites: Not |
______________________________________________________________________________Osteospermum White
Shrubby spreading plants covered with Daisylike flower. Deer like the young flower/shoots.
full sun - 30" apart - grows to 12" tall
Agapanthus - most blooms - June 2008 - drought year
Dwarf Lavender Cotton