Native Plants

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Wednesday - March 25, 2015
From: Austin, TX
Region: Southwest
Topic: Non-Natives
Title: Using Cement Blocks for Raised Beds
Answered by: Anne Van Nest
QUESTION:
Is it safe to use cinder blocks for box gardens? If not, what do you suggest?ANSWER:
Generally there are a lot of people with testimonials online about successfully using cinder (cement) blocks for raised beds that contain vegetable or flower gardens. There are some people though that have concerns about excessive alkalinity leaching from the cement into already alkaline soils. Also some have issued warnings about toxins being present in the cement blocks. In both these situations they recommend using a concrete sealant and polymer paint before putting in the soil. And if you have concerns about the sealant or paint being close to edible plants, then a thick plastic liner can be installed between the blocks and the soil.
More Non-Natives Questions
Damage to non-native peach trees in Austin
January 02, 2010 - I have 3 peach trees, different varieties. In the past years it has just produced worm-eaten fruit, most of which falls to the ground before ripening. Can these trees be treated for a better crop th...
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Sap oozing from non-native Chinese pistache in San Antonio
September 07, 2011 - I live in San Antonio, and my chinese pistache is exuding copious amounts of a sticky sap from old trim sites and from the trunk itself. The tree is about 12 years old and has been healthy up until no...
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Non-native Philadelphus Innocence mock orange from Paris TX
June 20, 2012 - What is the best place in the garden to grow Philadelphus Innocence mock orange in Paris, Tx?
Also, how long after transplanting do flowers occur?
Any tips appreciated
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Lifespan of non-native weeping cherry tree
September 17, 2008 - What is the lifespan of a weeping cherry tree? Thanks.
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Non-native bougainvillea from Austin
June 25, 2012 - Bougainvillea isn't a native, but since they are so prevalent here, I hope you can help. I have three, one established in-the-ground, which is pruned almost to the ground every winter; two new this y...
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