Do you want to develop Allium cepa in California , but do n’t know when to engraft them ?
Planting onions is not as easy as it seems .
Here ’s why :

So if you plant them out of doors too early in the springtime they will die . And if you plant them too tardily , your onions wo n’t produce a harvest before the first hoar get in the dusk .
Today , I ’m hold up to instruct you the idealistic time to engraft onions in California :
When to Plant Onions in California
As you may have already guessed , you postulate to pay very close attention to your local weather in the outflow . Specifically , you are going to postulate to watch when the last frost come .
In general , when there has n’t been a freeze for two weeks , you are SAFE to plant your onion outside in California !
For your reference , I have created this table for average frost date for most major city in California . If your city is not listed below you’re able to find its Last & First Frost DatesHERE .

California Last & First Frost Dates
alas , Mother Nature plays barbarous tricks on us every yr .
It should be note that the above day of the month are just average .

There are years when the last frost comesMUCHlater . Sometimes , the last frost happens much earlier and you may get your onions planted alfresco in California much quicker .
Like I said before , you call for to be very diligent in checking your local atmospheric condition .
So what happens if a frost comes AFTER you plant your onion plant ?
When you recognise a hoar is occur you need to take action .
Also , make certain not to implant your onions in your garden too late .
When Should You Start Your Onions Seeds Indoors?
look on the type of onions , it takes roughly 60 - 70 day to grow Allium cepa from seed indoors and then graft them to your garden .
For aspecific datethat you should come out onions seed indoors you should :
Not only this , but I commend again pay close attention to your local atmospheric condition report .
It should also be noted that the unspoilt proficiency for bringing your onions plants out of doors is to preface them ( in their pots ) outside for an hour . And then increase the amount of clip they drop outside each day by an minute until they have been outside for 8 hours .
This will “ harden ” your onions industrial plant , increase its chance of fighting off disease , insects , droughts , and fuddled precondition .
If you want to learnWHENto plantANYVegetable in California , channelize over toHEREand just character in the vegetable you want to rise .