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Just Getting Started
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Posts: 48
Joined: Mon Apr 06, 2009 3:46 pm
Location: Cleveland

Do Josee Lilacs require high PH soil?

I am going to plant some Josee Lilacs in a garden that has some high PH soil (Fire Pit reminants) at the bottom with a lot of Miricle Grow Garden Soil on top of it. Will this be OK? I'm in Zone 5 near Cleveland and it is going to be in an area with a tone of sun and ample moisture. Will they do well there?

Just Getting Started
Tom Rohlfs
luis_pr
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Posts: 815
Joined: Sun Jul 05, 2009 12:31 pm
Location: Hurst, TX USA Zone 7b/8a

Lilacs prefer alkaline soil, the opposite of rhodies and azaleas. They will tolerate some acidity so it depends on just how acidic the soil is. pH readings around 6-7 are ok for example but readings much lower than 6 may be a problem.

If the fire piut was used a lot, you may want to consider replacing the top few inches of soil (or amending it a lot) because the burn pile sterilizes that area and you need bacteria to start populating that soil again.
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