Do you want to get zinnia in New Hampshire , but do n’t bang when to plant them ?
Planting old maid is not as easy as it seems .
Here ’s why :

So if you plant them outside too early in the spring they will die . And if you imbed them too late , your zinnia wo n’t produce a blooming .
Today , I ’m go to instruct you the idealistic metre to plant old maid in New Hampshire :
When to Plant Zinnia in New Hampshire
As you may have already guessed , you need to ante up very unaired attention to your local weather in the spring . Specifically , you are going to need to watch when the last hoar occurs .
In general , when there has n’t been a icing for two week , you are SAFE to plant your zinnia outside in New Hampshire !
For your reference , I have create this mesa for modal frost dates for most major cities in New Hampshire . If your city is not heel below you could find its Last & First Frost DatesHERE .

New Hampshire Last & First Frost Dates
alas , Mother Nature plays roughshod tricks on us every year .
It should be noted that the above date are just averages .
There are years when the last frost comesMUCHlater . Sometimes , the last frost happens much before and you may get your zinnia plant outside in New Hampshire much quicker .

Like I aver before , you need to be very diligent in fit your local weather .
So what happens if a frost come AFTER you embed your old maid flower ?
When you have it off a frost is coming you need to take action .
Also , check that not to plant your old maid flower in your garden too late .
When Should You Start Your Zinnia Seeds Indoors?
Depending on the character of zinnia , it takes roughly 5 to 24 days to grow old maid flower from semen indoors and then transfer them to your garden . And then another 2 months to bloom !
For aspecific datethat you should set out old maid seeds indoors you should :
Not only this , but I recommend again paying close attention to your local weather report .
It should also be note that the best proficiency for impart your zinnia plants alfresco is to stick in them ( in their pots ) outside for an hour . And then increase the amount of prison term they spend outside each day by an 60 minutes until they have been outside for 8 minute .
This will “ harden ” your old maid works , increasing its probability of fighting off disease , dirt ball , drought , and wet condition .
If you desire to learnWHENto plantANYFlower in New Hampshire , head over toHEREand just type in the flower you want to grow .