Messages posted to thread:

ralph31-Dec-02 04:35 PM EST 3b   
Budding Poet04-Jan-03 03:11 AM EST 5a   
Will Creed, Horticulturist04-Jan-03 08:06 PM EST   
sharon Walla11-Jun-09 09:40 AM EST 3b   

Subject: crown of thorns
From: ralph
Zone: 3b
Date: 31-Dec-02 04:35 PM EST

Has anybody got any advice on repotting crown of thorns plants. I have a small crown of thorns which is about 1 foot tall and has three seperate stalks. There is very little branching . The plant is in a 6" pot and seems to be a bit top heavy so I thought I might re-pot it to see if it will spread out a bit. I can't seem to find much on the internet with regards to re-potting. If anyone has any advice I'd sure appreciate it. Thanks

Subject: RE: crown of thorns
From: Budding Poet (
Zone: 5a
Date: 04-Jan-03 03:11 AM EST


The six inch pot should be fine for a few more years. I grow a large clump in a gallon pot . Keep in good light through the winter and get it out in full sun in the summer for best growth and water with a warm compost tea.

If the pot is top heavy, top dress with p-stone. When working with it, beware that its sap as are most of the Euphorbias, quite toxic.

There is a delightful little book full of “Crowns of Thorns” , intrigue and humor for your winter time reading ...”The Cactus Club Killings” by Nathaniel Walpow

Subject: RE: crown of thorns
From: Will Creed, Horticulturist
Date: 04-Jan-03 08:06 PM EST

Repotting won't cause it to spread out, but it might lead to overwatering.

If you place the existing pot and plant inside of a larger terra cotta pot and fill in the space between the two pots with gravel or stone, you will have lots of bottom ballast to keep the plant from tipping over.

Euphorbia sap is a mild skin irritant for some people and will irritate most everyone's eye and mouth membranes. Just exercise normal caution.

I have written an article on repotting plants that contains some surprising information. This topic is more misunderstood than just about any area of caring for potted plants. I will email it to anyone who sends an email address to

Subject: RE: crown of thorns
From: sharon Walla
Zone: 3b
Date: 11-Jun-09 09:40 AM EST

is it better re leave ib same pot or repot the plant when it gewts to be 16inches tall and starting to get top heavyit is in bloom right now and looking healthy

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