What ph Irises need - Knowledgebase Question

Soil
kalamazoo, MI
Question by dfgquilter
June 5, 2007
Hi! Thanks so much for your past help.

My ph sheet here says Irises need 5.0 -6.5.
My soil (by the Irises) came out 6.8.

Should I make any changes for my Irises or will this be
OK? Is it too acidic? I'm confused on this. Please help.
I have Muracid if need be. If so, how much?

Thanks, Dorian


Image
Answer from NGA
June 5, 2007

0

 The good news is that Iris are relatively tolerant of soil pH. I've grown them in Washington State where the soil is acidic (5.5) and in Arizona, where the soil is alkaline (8.0) without problem. Your soil tests out at nearly neutral, which is fine, too. Instead of trying to lower the pH with sulfur, you might try mixing in some peatmoss as you plant your irises. This will lower your pH by just enough to put it in the slightly acidic range. Hope this clarifies things for you!

You must be signed in before you can post questions or answers. Click here to join!

« Return to the Garden Knowledgebase Homepage

Member Login:

Username:

Password:

[ Join now ]

Garden.org Homepage
Help using the site
About
Contact
Terms of Service
Privacy
Corporate Sponsors
Memberlist
Acorns
Links
Ask a Question
Newsletter

© 1972 - 2018 National Gardening Association

Times are presented in US Central Standard Time

Pinterest
Facebook
Youtube
Twitter
Instagram

Today's site banner is by Baja_Costero and is called "Aloe with six-legged friends"