quick question

quick question

What would cause the bottom leaves of my jade/succulent to brown/rot? I know it sounds like a classic case of overwatering but I've tried to be stingy with the watering can. It gets part to full sun and I try to water it from the bottom every 1-1/2 weeks or so. Any ideas? Image hosted by Photobucket.com
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Bug ID and Lily ID

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Square Foot Garden

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My Gardening Hat!

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What is this?

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Floor Plan Help!

FINALLY!

FINALLY!