dying cedars

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dying cedars

Postby Millie » Tue Jul 19, 2016 4:05 pm

Hi All,

These cedars were planted last December. I have been watering them once and sometimes twice a week but looks like not deep enough. Out of 37 there are 8 are struggling and out of those four are dropping needles. Will water more and deeply and maybe add some evergreen fertilizer 2-10-4. Did use 10-10-10 slow release just recently.

Any other suggestions to revive the dying ones?

Thanks,
Millie

Looks like photo did not come up.
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Re: dying cedars

Postby Millie » Tue Jul 19, 2016 4:22 pm

Hope this works.
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Re: dying cedars

Postby Millie » Tue Jul 19, 2016 4:29 pm

Another photo.
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Re: dying cedars

Postby Millie » Tue Jul 19, 2016 4:31 pm

These are fine guess it's because they get more water from my tomatoes.
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Re: dying cedars

Postby madamezil » Tue Jul 19, 2016 4:32 pm

Hi,

Looks like lack of water to me. What area are you in?
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Re: dying cedars

Postby Millie » Tue Jul 19, 2016 4:34 pm

Now these look okay and are treated the same way. Hope they stay this way.
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Re: dying cedars

Postby Millie » Tue Jul 19, 2016 4:39 pm

I am in Niagara Region believe that is zone 5a or 5b.
It took one hour and a half to water these today.

The ones behind the tomatoes are doing fine.

How long are you supposed to water each shrub two or three minutes from the hose?
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Re: dying cedars

Postby orchidguy » Tue Jul 19, 2016 6:22 pm

Keep them well watered (every day) and most times the green will return to cedars. Take a fan rake and gently try to brush the dead foliage away from them. Whatever you do....do not feed them. Their roots are probably damaged too, and adding fertilizer to them will damage them further. You could scratch a bit of bone meal into the soil, and try to mulch around each tree to retain its moisture levels.
From the photo's they don't look too far gone, so would give the above mentioned hint a try for about a month. If in a month no new green growth shows, then probably they are goners

good luck
"It is better to remain silent and be thought a fool than to open one's mouth and remove all doubt." - Mark Twain
Northeastern Ontario....zone 3b-4a
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Re: dying cedars

Postby HeidiPG » Tue Jul 19, 2016 8:15 pm

Please do not add more fertilizer when they are this stressed! it does no good and often does harm.

A few questions to understand how you got to this situation:

-What is your native soil like - sandy, clay, loamy? If clay, you could be drowning them with a bowl effect. Water percolation through disturbed soil can cause drowning, particularly in heavy clay.

- How much soil amendments did you put around them when planting, or did you just use native soil? If you use compost or potting type soils, you area also affecting the water percolation and that can cause drowning.

- Were they purchased in ball and burlap, or plastic pots?
- If burlap, did you leave the burlap on? You should never leave burlap on - it doesn't rot away no matter what anyone tells you.

- Did you bare root plant them or leave them in the pot/ball shape they came in? Newer methods prefer bare rooting and corrective root pruning if any circling or bent inward roots are found. Pruned roots regenerate easily as long as well watered.

- I disagree with bone meal unless a soil test has been done - it is often rarely needed at all upon testing.

-MULCH! yes, if possible do a 4 inch deep mulch out to 4 feet circumference if possible. Do not use rubber or stone mulch, and do not use landscape fabrics - it blocks water and air transfer when tested under scientific methods.

Watering, a normal lawn for example only needs approximately 1 inch per week. But anything that has been recently transplanted into well draining soil should be watered much, much more and daily in any type of heat. Preferred method of slow watering is to use a weeping hose for a couple of hours each day. Watering needs in clay soil is quite different due to poor drainage.

Can I refer you to one of the most up-to-date garden scientists in North America? She has published a lot of material on successful transplanting of shrubs and trees. As a someone who trained as a master gardener, I have found her information to be extremely relevant and useful.

https://puyallup.wsu.edu/lcs/

here is a handout found on her fact sheet page at the above web address:

"Horticultural techniques for successful plant establishment"
Heidi in Prince George, BC
Zone 3 and loving it!
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Re: dying cedars

Postby Millie » Tue Jul 19, 2016 9:50 pm

Thanks Heidi, orchidguy and madamezil. Will water more as that is the problem for sure.

They do have mulch around and we're planted in new soil.

Now these look good because they got more water while watering the tomatoes plants.

Mori Gardens from where they were purchased suggested 2-10-4 fertilizer but have not bought it yet.
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