Perennials forum: established lithadora turned black

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catdocrn
Mar 1, 2014 12:14 PM CST
I have several large well established lithadora that have thrived on a burm I planted. They have been there for about 10 years. I live outside of Portland Or.. This year we had quite a dry cold spell and then some cold with snow. After the snow all of the lithadora turned black. What could be the cause and what can I do about it. Thank You!
Name: virginiarose
Virginia
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virginiarose
Mar 1, 2014 5:14 PM CST
@catdocrn... first of all.... Welcome! Welcome! Welcome!

I hate to say but they might have root rot. Can you dig one up and look at the roots and the crown?
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: Bob
Vernon N.J. (Zone 6a)
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NJBob
Mar 1, 2014 6:52 PM CST

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http://pnwhandbooks.org/plantdisease/lithodora-diffusa-black...
Another problem is you mentioned a long dry spell, from what I read they do not tolerate any drought at all.
Name: Julia
Washington State (Zone 7a)
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springcolor
Mar 2, 2014 1:36 AM CST
Parts of mine have black on them too. At this point in our weather (PNW) just leave them be. I have had them sprout and grow and others that die that turned black. It got a little cold for them here and I believe the black is frost burn. Come May they just might sunrise you.
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Name: virginiarose
Virginia
Money talks but Chocolate Sings!
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virginiarose
Mar 2, 2014 6:11 PM CST
What zones are they good in? I would love some of these! Thumbs up
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: Julia
Washington State (Zone 7a)
Garden Photography Region: Pacific Northwest Celebrating Gardening: 2015 Forum moderator Plant Database Moderator I was one of the first 300 contributors to the plant database!
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springcolor
Mar 2, 2014 6:18 PM CST
http://garden.org/plants/search/text.php?q=Lithodora
Check these out in the data base. I have mine growing over a rockery. I'll see if I have a picture.
Sempervivum for Sale
Name: virginiarose
Virginia
Money talks but Chocolate Sings!
I was one of the first 300 contributors to the plant database! Garden Ideas: Level 1 Avid Green Pages Reviewer Hibiscus Dragonflies Daylilies
Bee Lover Dahlias Butterflies Hostas Birds Lilies
virginiarose
Mar 2, 2014 6:52 PM CST
Thanks I saw that. If you have a picture it would be great. I think I am close enough to 7b to make it work. I will put it in a raised bed or a pot. I got a 50 lb bag of perlite yesterday so drainage is no problem. LOL.
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: Julia
Washington State (Zone 7a)
Garden Photography Region: Pacific Northwest Celebrating Gardening: 2015 Forum moderator Plant Database Moderator I was one of the first 300 contributors to the plant database!
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springcolor
Mar 2, 2014 9:01 PM CST
Here's 2 pictures. Every summer I give these plants a hair cut and cut all the dead stems from underneath the plants. They can get large.
Taken in June. This one takes over the entire corner of the rocky. This may have been after a trim. These plants are often hanging to the bottom of this wall.


Thumb of 2014-03-03/springcolor/8f4856 Not front and center but behind the pots. Taken in August

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Name: Arlene
Grantville, GA (Zone 8a)
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abhege
Mar 2, 2014 9:38 PM CST
Susan, I grew it in MD so you should have no problem. Don't over water it though!
Name: Zuzu
Northern California (Zone 9a)
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zuzu
Mar 2, 2014 11:29 PM CST

Plants Admin

Lithodora diffusa grows well in zone 9, whether we have a drought or excessive rainfall. It grows equally well in containers and in the ground. All of my lithodoras are growing in sunny spots. I had some in the shade, but they only lasted a few years.
Name: virginiarose
Virginia
Money talks but Chocolate Sings!
I was one of the first 300 contributors to the plant database! Garden Ideas: Level 1 Avid Green Pages Reviewer Hibiscus Dragonflies Daylilies
Bee Lover Dahlias Butterflies Hostas Birds Lilies
virginiarose
Mar 3, 2014 6:36 AM CST
Great advice! Thank you all, I am going to give it a try. Thumbs up

Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: virginiarose
Virginia
Money talks but Chocolate Sings!
I was one of the first 300 contributors to the plant database! Garden Ideas: Level 1 Avid Green Pages Reviewer Hibiscus Dragonflies Daylilies
Bee Lover Dahlias Butterflies Hostas Birds Lilies
virginiarose
Mar 3, 2014 6:37 AM CST
springcolor said:Here's 2 pictures. Every summer I give these plants a hair cut and cut all the dead stems from underneath the plants. They can get large.
Taken in June. This one takes over the entire corner of the rocky. This may have been after a trim. These plants are often hanging to the bottom of this wall.


Thumb of 2014-03-03/springcolor/8f4856 Not front and center but behind the pots. Taken in August



Drooling Drooling Drooling
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: virginiarose
Virginia
Money talks but Chocolate Sings!
I was one of the first 300 contributors to the plant database! Garden Ideas: Level 1 Avid Green Pages Reviewer Hibiscus Dragonflies Daylilies
Bee Lover Dahlias Butterflies Hostas Birds Lilies
virginiarose
Mar 3, 2014 6:39 AM CST
springcolor said:Here's 2 pictures. Every summer I give these plants a hair cut and cut all the dead stems from underneath the plants. They can get large.
Taken in June. This one takes over the entire corner of the rocky. This may have been after a trim. These plants are often hanging to the bottom of this wall.




Julia, do you know what kind of lithadora this is, maybe we could put it into the database. Beautiful picture!!
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: Julia
Washington State (Zone 7a)
Garden Photography Region: Pacific Northwest Celebrating Gardening: 2015 Forum moderator Plant Database Moderator I was one of the first 300 contributors to the plant database!
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springcolor
Mar 3, 2014 10:21 AM CST
Sorry Susan, I planted about ten plants 20 years ago and no idea of the name.

Catdocrn, forgot to welcome you Welcome! Welcome! Keep us posted as to what happens to you black plants when it warms around here. I think you will be surprised with growth at least around the base..
Sempervivum for Sale
Name: virginiarose
Virginia
Money talks but Chocolate Sings!
I was one of the first 300 contributors to the plant database! Garden Ideas: Level 1 Avid Green Pages Reviewer Hibiscus Dragonflies Daylilies
Bee Lover Dahlias Butterflies Hostas Birds Lilies
virginiarose
Mar 3, 2014 12:17 PM CST
It sure is beautiful, hopefully I will find a few in the spring. Thank You!
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: Julia
Washington State (Zone 7a)
Garden Photography Region: Pacific Northwest Celebrating Gardening: 2015 Forum moderator Plant Database Moderator I was one of the first 300 contributors to the plant database!
Dog Lover Foliage Fan Greenhouse Container Gardener Heucheras Sedums
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springcolor
Apr 23, 2014 12:18 AM CST
Heres a picture showing my black lithadora coming back to life.
Thumb of 2014-04-23/springcolor/360385

Sempervivum for Sale
Name: virginiarose
Virginia
Money talks but Chocolate Sings!
I was one of the first 300 contributors to the plant database! Garden Ideas: Level 1 Avid Green Pages Reviewer Hibiscus Dragonflies Daylilies
Bee Lover Dahlias Butterflies Hostas Birds Lilies
virginiarose
Apr 23, 2014 3:14 AM CST
Does it do that every year?
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: Julia
Washington State (Zone 7a)
Garden Photography Region: Pacific Northwest Celebrating Gardening: 2015 Forum moderator Plant Database Moderator I was one of the first 300 contributors to the plant database!
Dog Lover Foliage Fan Greenhouse Container Gardener Heucheras Sedums
Image
springcolor
Apr 23, 2014 9:25 AM CST
No, This year we just had a week of cold weather. A few my be goners but for the most part they are coming back.
Sempervivum for Sale
Name: virginiarose
Virginia
Money talks but Chocolate Sings!
I was one of the first 300 contributors to the plant database! Garden Ideas: Level 1 Avid Green Pages Reviewer Hibiscus Dragonflies Daylilies
Bee Lover Dahlias Butterflies Hostas Birds Lilies
virginiarose
Apr 23, 2014 3:04 PM CST
Thumbs up
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood

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