My final decision on what plants to plant in Part A ~ !

Okay, I know it has been a while since I first planted by sweet potatoes & sunflowers - and this will affect my experiment badly seeing as the sunflowers & sweet potatoes have now had 10 whole days head start in growing.

But I will have to continue with my experiment anyway, so I just have to plough on.

So - I have further researched non-vascular plants, and have come to the conclusion that it will be really quite hard to grow them myself. So I have settled on planting my carrots - as they are largely based underground and will thus be affected if the allelochemicals are released into the ground, whereas the sunflowers will be affected more if the allelochemicals were released into the air.

PLUS - the carrots I bought were already growing. So the sunflowers' and sweet potatoes' head start in growth should be cancelled out. Yay! :)

And for my last plant, I have decided to plant  cauliflower - it has a high sensitivity to allelochemicals and also is easier to grow than watercress. In addition, they only need to grow for about 2 and a half months, according to:

http://www.readersdigest.com.au/handyman/how-to-grow-cauliflower/article125633.html


I will plant the carrots tomorrow, and get the cauliflower seeds ASAP.


Finally, my problem's solved. :)