Growing Broad Beans, also Fava bean

Vicia faba : Fabaceae / the pea or legume family

Jan F M A M J J A S O N Dec
      P P     P P      

(Best months for growing Broad Beans in New Zealand - cool/mountain regions)

  • P = Sow seed
  • Easy to grow. Sow in garden. Sow seed at a depth approximately three times the diameter of the seed. Best planted at soil temperatures between 43°F and 75°F. (Show °C/cm)
  • Space plants: 6 - 10 inches apart
  • Harvest in 12-22 weeks. Pick frequently to encourage more pods.
  • Compatible with (can grow beside): Dill, Potatoes
  • Broad bean flowering
  • Egyptian broad beans
  • Shelling broad beans
  • Young beans on plant
  • Young broad bean plant

It is a rigid, erect plant 0.5 - 1.7 m tall, with stout stems with a square cross-section. The leaves are 10 - 25 cm long, pinnate with 2 - 7 leaflets, and of a distinct glaucous grey-green color. Harvest 90 - 160 days depending on how cold the weather is.

In windy areas it is best to provide some support with posts and string, otherwise the plants will fall across each other. Pick the tops out once beans start setting to prevent blackfly.

Culinary hints - cooking and eating Broad Beans

The fresh beans are eaten steamed or boiled. As the beans mature it is better to remove their tough outer skins after cooking.
The leafy top shoots of the adult plants can be picked and steamed after flowering.
Small beans can be eaten whole in the pods.
Broad beans will freeze well. Remove from pods and blanch.

Your comments and tips

21 Nov 23, Anthony (New Zealand - sub-tropical climate)
.I Grow mine in September. I Grow my seeds in toilet rolls with seedling mix. 10 day or less to germinate.. plant out before bees arrive about in September ,October.(will help pollinate the flowers ) Harvest Nov. Yummy I have heard you can grow them all summer in a shaded place . Doing it this year Waste of time growing them through winter, without the bees Growing season is Auckland
01 Jun 24, Richard Washer (New Zealand - temperate climate)
sewing in late autumn/early winter means that plants will be well developed in early spring ready to flower. results in a much earlier crop than if you sew in spring...best to sew some to grow over winter and some in early spring to get extended cropping - Richard Washer
29 Apr 22, Lynn Laurent (New Zealand - temperate climate)
Since moving to Tauranga I have found it better to plant broadbeans mid winter …. June as any earlier the flowers are not pollenated. Wait until mid winter so the bees will be active when the plants begin to flower. That way you don’t lose the first line of beans. Uncle in Hastings always did the same. Then they crop November into December.
06 Sep 21, Nigel (New Zealand - cool/mountain climate)
My beans have been flowering for 2 months. Lots of continuous flowers but so far no beans. Ideas please.
27 Sep 21, Steve (New Zealand - temperate climate)
My understanding is that you have to wait for the bees to arrive to pollonate the plant. I had the same issue last year as well. Just need to wait a bit longer
07 Sep 21, (New Zealand - sub-tropical climate)
I had the same problem in sub-tropical Australia last. They probably prefer a cooler climate like yours. I put it down to wind last year although I have no idea. Maybe google about it or ring an agricultural dept.
26 Aug 21, adrienne Margaret mcgrath (New Zealand - temperate climate)
my broad beans are only about two foot high and have flowers,?
20 Aug 21, Richard Stancliffe (New Zealand - cool/mountain climate)
Are the plants frost tolerant? We get -5degC frosts through to the end of October. I have a dozen 30cm plants to plant out. Cheers
02 Dec 21, Celeste Archer (Canada - Zone 7b Mild Temperate climate)
The kill temperature for Fava Beans ranges from about -4c to -10c depending on the variety. Furthermore the temperature needs to be sustained; that is 2 minutes at -4c will not kill the fava bean plant; neither will an hour (most likely).... but 48 hours of temperatures consistently below -4c might. When the cold temperature is sustained the cells of the plant explode (freeze); it is the "water transportation system" that gets damaged and the plant can't continue. If you are expecting colder than average temperatures (or colder than you expect your fava beans to be able to handle) - you can cover them with plastic (clear if your keeping it on - anything if you are just putting it on top of them overnight). Tent style is best, but umbrella style (no sides) is also helpful. The most difficult time for the plants is usually around 4am when the "dew" settles, if during cold temp days you can get the plants covered overnight not only will the soil help keep them warm, you are keeping that cold morning sweat off them which can really do considerable damage if temps are cold. Also, high winds work like the morning dew; transporting the cold temperatures into the plant more readily.
20 Dec 21, Celeste Archer (Canada - Zone 7b Mild Temperate climate)
I forgot to mention - if you have hummingbirds in your area - fava beans will produce some flowers during your overwintering process and provide some much needed food for humming birds (as do hellebores/lenten roses).
Showing 1 - 10 of 29 comments

Update: May 11: My fava flowers are turning into beans; already a couple of dozen beans with many of the other flowers on route to becoming beans. I overwintered this crop; starting in August and expect to have full bean production in June. Here is what I found when I overwintered; the plants had more time to grow; and therefore are larger and have a more profuse flowering. I am expecting more beans. The overwinter process did take 10 months from planting seeds to getting beans, however I didn't consider this a real estate hog because I'm hard pressed to think of any crop I would have planted over winter in that space that would have done better. Additionally, I planted favas in spring of this year (April'ish) and am expecting beans in July/August. That is to say the overwinter took longer (10 months), but clearly I am getting more beans earlier in the year (about 6 weeks earlier- it probably would have been sooner if the location was better). I did also enjoy some of the overwinter fava bean leaves as soup garnish so that was also a big plus. Additionally, there were small amounts of beans here and there through out the winter. I suspect there would have been more had the location been in sun, or part shade (the over wintering location gets several hours of sun but a lot of light is reflected on them). I am pleased with the overwintered favas and will over winter again. Our nighttime temperatures in winter hit about -6c but this was only for several nights. Mainly nighttime temperatures here are closer to -2c. After a nighttime temp of -6c (it was a little colder but not much) I covered one patch of favas for several nights (cold spell), and I did not cover the other smaller patch (which is in a windier location). Both patches survived, both are producing - I did have to remove about a third of the plants that where not covered due to wind/cold damage but they rebounded back just fine. My research tells me that favas have a kill temperature of anywhere from -5c to -10c depending on variety.... also if the temperatures dips that low for 1 hour, your probably fine; it has to sustain the temperature (5 or 6 hours) to actually kill the plant (soil temp also comes into play). Again, both patches where fully exposed during the first cold night, but then I managed to cover one of the two patches and the covered patch did fair much better (excluding tarp damage due to poor construction). Both patches survived and are now thriving and producing beans. So getting around to my answer for the original question: how long until you get beans; it's really a matter of how long until all the "setting pods" criteria are met: 1. ample water while flowering - favas need a lot of water to set pods; so once you see flowers; up the watering 2. temperatures (somewhere between 5c and 23c with 17c being about perfect for pod formation) 3. light: about 6 hours of good sunlight and REFLECTION counts in this case - some plants absolutely need direct sunlight, some plants are fine with reflected light or very bright shade. Your shortest number of days for bean production will be about 80days. To get beans in 80 days figure out what months you expect the conditions to meet the above three criteria and count back to figure out your planting date (allow about 10 days for germination) - that is 80 days to beans DOES not include germination time the 80 days is from seedling to beans. Your longest number of days for bean production (provided your area can meet the pod setting criteria) will not exceed a year (under normal conditions) with 10 months being the most reasonable longest number of days. You should remember, that the fava leaves are a very nice green and I certainly reached for them over the winter more than once. All above ground parts (so not the roots - but the stem, branches, leaves, flowers and beans) are edible. Of course G6PD can be an issue and people with G6PD should clear up their problem (increased iron intake via natural sources - cast iron cookware, cocoa etc. - and it could take 6 months) before considering consuming fava (leaves, flowers, beans). Also, G6PD'ers need to really really avoid eating any green part of a tomato plant (small leaf by accident, or part of the stem attached to a tomato). Best of luck.

- Celeste Archer

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