Hydroponic Bok Choy Grown By My 4 Year Old

My 4 year old wanted to grow something in our garage garden so since we cook a lot of Asian food (my wife is Filipino), we decided we should plant some Bok Choy.  

Now, keep in mind that Bok Choy is NOT a warm weather plant and our garage easily gets close to 100 degrees so I wasn't sure if this would even work, but I figured it's worth a try. 

4 Year Old Chloe Planting Hydroponic Bok Choy

90+ Degree Rez Temps

So throughout this grow, the temp was between about 75-93 degrees (water temperature). That is in and of itself pretty amazing for any plant, let alone a plant which tends to go to seed once it gets above 70. 

On top of that, I did NO water changes for the entire 30 days and only adjusted pH 2 times. This wasn't intentional, but I put way too much nutrients in at first like an idiot and about killed them, so I just kept diluting the water as it evaporated. I added new water 3 times during the grow (RO water only, no nutes).

 At 90+ degrees, the water can evaporate relatively quickly, in fact there is some yellowing of the tips of some of the leaves here because I left it while on vacation and came back to maybe 25% of the water left in the rez which meant my PPM was insane (1.5k!).

But, all in all, I think they did pretty well given the circumstances, even with all that heat and lack of water changes and drought, the roots were pearly white!

After 2 Weeks

After 30 Days

So What's The Secret To Mitigating Against High Rez Temps?

I honestly don't know. I have never grown anything in an environment as hot as this before and I tried a few new things at once so it's hard to tell which one made the most difference.  

There are 3 things I believe to have affected the plant's resistance to heat: 

 

Posted on August 27, 2013 .