Companion Planting Clarification
ohlittleangelina Posts: 11
in Fruit & veg
Please can anyone tell me if companion planting advice applies only to plants in the same soil or whether it can sometimes apply to plants next to each other but in different pots. I have several pots of various herbs, including dill, situated very close to my veg trug which I am now reluctant to plant up as, it seems there may be some conflict - dill particularly being a bad boy! I am a novice to both companion planting and veg trugging.
With Dill I think they can stunt the growth of some root crops if in the same soil, or can cross pollinate with some plants, so avoid being close together even if in pots.
Hope that helps.
You mentioned in your earlier post that you thought sunflowers, dwarf french beans and tomatoes shouldn't be grown together, but I know that beans and tomatoes together are fine, in fact they are often listed as good companions. I’m not aware of sunflowers having a measurable allelopathic effect on toms, but is probably not the best combination because they are both very hungry plants and maybe its competition for nutrients there. Fennel, and to a lesser extent dill inhibit tomatoes and should be kept well away. Basil is the best companion herb to grow with toms.
While there are measurable allelopathic effects of companion planting, there is also a lot of guff out there so it can be very confusing and contradictory. There was a discussion about companion planting (in the context of crop rotation) recently in the Fruit and Veg forum that you may find interesting:
Hope that helps.
Most plants from different plant groups don t readily cross with one another so dill won't cross with tomatoes afaik.
It's quite a complex issue, isn't it? I find it fascinating but there is still a lot I'm learning
If someone says don’t plant x with y I want to know why, how it works or doesn’t work and what the chemical interaction is. The science just isn’t there for many things tho, sometimes its just decades of experience from growers saying if you plant x with y you get a poorer crop. Bob Flowerdew did some interesting experiments that indicated the veracity of some of the old folklore, so I tend to trust his judgment, but do wish he would back up his statements sometimes, because many things he does say are scientifically verifiable. Perhaps thats just me being a geek, although I think ‘curious and enquiring’ sounds better
Nollie, geek is good. It takes the legwork pressure off science lightweights like me!!!
Yes you are right, onions and carrots are good companions.
Again, you are right about corn, climbing beans and squash, a classic combination, although you need very good soil and a lot of water to grow these three together. I grow my squash (well, courgettes, both curcubits) in the shade of corn. I grow peas and broad beans together in a different area, because they are both legumes that like the same conditions. Broad beans do not need the same kind of support as climbing beans. Also, the broad bean crop is harvested before the corn really gets going!