Ask a Question forum: How to get rid of scilla

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Ottawa, canada
Alisa123
Apr 30, 2019 7:12 PM CST
Hi All,

We bought and moved into a new house last fall. Spring has now sprung and to my (unpleasant) surprise, my backyard is completely overrun with scilla! I have tried weed b gone as well as roundup (1 application on a test group of scilla) and it does not kill this weed. How do I get rid of scilla? There are literally thousands in my yard.

Help!
Taos, New Mexico (Zone 5b)
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Henderman
Apr 30, 2019 8:14 PM CST
How about tilling to bring the bulbs to the surface?
Name: Daisy I
Reno, Nv (Zone 6b)
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DaisyI
Apr 30, 2019 8:22 PM CST
Welcome!

I assume you have Wood Hyacinth (Hyacinthoides hispanica). They used to be included in Scilla but were moved.

And that is about the only way you are going to get rid of them - move. Nothing kills them. Sighing!
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

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Name: Suzanne/Sue
Sebastopol, CA (Zone 9a)
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Calif_Sue
May 1, 2019 12:34 AM CST

Plants Admin

This one? Spanish Bluebell (Hyacinthoides hispanica)
Funny, I never knew it naturalized but I read the comments (scroll down past the photos)
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[Last edited by Calif_Sue - May 1, 2019 6:38 AM (+)]
Give a thumbs up | Quote | Post #1962584 (4)
Name: Arlene
Southold, Long Island, NY (Zone 7a)
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pirl
May 1, 2019 6:00 AM CST
Digging is useless. The bulbs go down too far. I ended up using full strength Ortho Poison Ivy and Tough Brush Killer. It worked. I replanted some coleus and they did very well.

Be sure to protect all surrounding plants!



Thumb of 2019-05-01/pirl/e54c1a


Thumb of 2019-05-01/pirl/d7ccb8


Thumb of 2019-05-01/pirl/51ebf0

Replanted with coleus:
Thumb of 2019-05-01/pirl/f0e1c9

Name: stone
near Macon Georgia (USA) (Zone 8a)
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stone
May 1, 2019 6:53 AM CST
Alisa123 said:How do I get rid of scilla? There are literally thousands in my yard.


I'm jealous!

Have you considered letting people come and dig these desirable bulbs for their own yards?

I'm not gonna drive up to Canada for Scilla... But I imagine that plenty of people locally would love some carefree flower bulbs...

What are you interested in growing instead of these beautiful flowers?

Turf? EW.

I once saw where GF's neighbor tried to poison his flowers... I couldn't understand... I dug some to take home... Later I moved, and some things didn't make the move... Personally... I don't want any turf...

Went back to the old yard last month... Saw a buncha stuff that I absolutely want...
[Last edited by stone - May 1, 2019 7:01 AM (+)]
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Name: Paul
Utah (Zone 5b)
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Paul2032
May 1, 2019 7:05 AM CST
Are you referring to Grape Hyacinth? I have a love hate relationship with them. They are pretty while the bloom but will take over. Impossible to dig out. I often see bulb mixes that are light on desirable things and 90% Hyacinths.
Paul Smith Pleasant Grove, Utah
[Last edited by Paul2032 - May 1, 2019 7:10 AM (+)]
Give a thumbs up | Quote | Post #1962721 (7)
Name: Arlene
Southold, Long Island, NY (Zone 7a)
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pirl
May 1, 2019 8:09 AM CST
I think they're talking about this one:
https://www.brecks.com/product...

I have the same love/hate relationship with muscari. Maybe it runs in their genes to spread more widely than we'd like.
Name: Paul
Utah (Zone 5b)
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Paul2032
May 1, 2019 8:26 AM CST
I've never known Spanish Bluebells to be invasive.......I've seem them naturalize in a pleasing manner.
Paul Smith Pleasant Grove, Utah
Name: Arlene
Southold, Long Island, NY (Zone 7a)
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pirl
May 1, 2019 9:31 AM CST
I'll take photos when they bloom to narrow down the identity.
Name: Suzanne/Sue
Sebastopol, CA (Zone 9a)
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Calif_Sue
May 1, 2019 9:52 AM CST

Plants Admin

This one is mine and has stayed in one spot.
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Name: Arlene
Southold, Long Island, NY (Zone 7a)
I was one of the first 300 contributors to the plant database! Tomato Heads Dahlias Houseplants Garden Ideas: Level 1 Photo Contest Winner: 2014
Celebrating Gardening: 2015 Plant Identifier Million Pollinator Garden Challenge
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pirl
May 1, 2019 10:35 AM CST
Buy a lottery ticket, Sue. You are so lucky that it stayed where you planted it.
Name: Connie
Willamette Valley OR (Zone 8a)
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pardalinum
May 1, 2019 12:16 PM CST
Here's my problem: Scilla + wild garlic + Arum italicum + Brodiaea + Ornithogalum, and those are just the worst of them. Tilling will spread the hundreds of little offset bulblets throughout the garden, making things worse. The wild garlic came with the house but the others are my fault. They all seed freely and digging the bulbs will always leave some tiny bulblets to come back to haunt you. It is only a temporary cosmetic fix.

These are nice plants if you are a cottage gardener but if you someday want to ever use the area for something else forget about it. This is where some of us differ in a friendly way.

Ottawa, canada
Alisa123
May 1, 2019 12:19 PM CST
Hmmm not sure what to do! Thanks for the poison ivy killer recommendation. Yes, I want grass! I have young kids and just wanted a wide open space for them to play :)
Name: Rick R.
Minneapolis, MN, USA zone 4
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Leftwood
May 1, 2019 6:55 PM CST
It might be that the problem plant is Scilla sibirica. It is more cold hardy and adpaptable the north. Here in Minnesota, we don't have problems with Spanish or English bluebells, but we do with Siberian Squill. It can easily seed into a lawn, and worse, into the wild woods. Regular lawn weed killers like Weed b gon don't work well because it (and Spanish/English bluebells) are monocots, and lawn weed killers target dicots. Round up does kill these plants, but the bulbs underground have a much larger mass than plain roots. The Scilla takes in the poison through its leaves, probably looks peaked for a while, until it translocates the poison to its root system and bulb. The poison becomes diluted so much that the concentration in the plant material isn't enough to kill. You cannot just spray Round up at a higher concentration. Then you will burn the leaves and the poison will not be taken in at all. You will need to spray multiple times before they naturally die back to get enough poison in the plant to kill. When the plants begin to look greener again, that's your cue to reapply.

The triclopyr in the poison ivy killer usually targets dicots also, but may work. It might be because the poster just overdid it to do the killing. I wouldn't over do it with Round up or any other lawn weed killer because there is significant residue left in the soil, and poisons the environment. But triclopyr is very volitile and very little if any remains afterwards. This is why planting afterwards usually works fine.
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Name: Suzanne/Sue
Sebastopol, CA (Zone 9a)
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Calif_Sue
May 2, 2019 9:44 AM CST

Plants Admin

So I wonder if the comments on the Spanish one in the database really should be deleted since most likely they apply to Siberian Squill (Scilla siberica)

They do look quite different, S. siberica are much shorter.


Hyacinthoides hispanica

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Name: Rj
Just S of the twin cities of M (Zone 4b)
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crawgarden
May 2, 2019 9:58 AM CST
Guess beauty is in the eye of the beholder, I have the Scilla sibirica, the grouping has probably doubled in 20 years, even when they are in the grass, which I have found they really don't do well, they die off in the late spring.
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Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
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DaisyI
May 2, 2019 10:19 AM CST
@Calif_Sue, I wouldn't change the database for two reasons:

First, we have never seen photos so don't really know what plant we are talking about.

And second, Spanish Bluebell (my guess) is equally hard to get rid of.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

President: Orchid Society of Northern Nevada
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Name: Beverly
Manzanillo, Colima, Mexico (Zone 11a)
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vitrsna
May 2, 2019 10:29 AM CST
If i wanted to create a place for children to play i sure wouldn't be using Roundup on any part of it.
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
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DaisyI
May 2, 2019 10:35 AM CST
Luckily, Round Up (Glyphosate) is not harmful to people or pets the minute it dries - I learned this the hard way from Poison Control when my children were young. Smiling

Brush killer and Poison Ivy killer, on the other hand, both have a residual effect.

I wonder how new plants are going to grow after using that much herbicide on the ground.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

President: Orchid Society of Northern Nevada
Webmaster: osnnv.org

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