Do you want to develop sunflower in Oklahoma , but do n’t know when to plant them ?
Planting helianthus is not as easygoing as it seems .
Here ’s why :

So if you imbed them out of doors too ahead of time in the spring they will die . And if you plant them too late , your helianthus wo n’t give rise a bloom .
Today , I ’m going to learn you the ideal time to plant sunflower in Oklahoma :
When to Plant Sunflower in Oklahoma
As you may have already guessed , you take to pay very faithful attention to your local weather in the spring . Specifically , you are go bad to involve to watch when the last hoarfrost occur .
In general , when there has n’t been a frost for two week , you are SAFE to plant your helianthus outside in Oklahoma !
For your reference , I have created this table for ordinary frost date for most major metropolis in Oklahoma . If your metropolis is not list below you may find its Last & First Frost DatesHERE .

Oklahoma Last & First Frost Dates
Unfortunately , Mother Nature play brutal tricks on us every year .
It should be noted that the above date are just averages .
There are age when the last frost comesMUCHlater . Sometimes , the last frost happen much before and you may get your helianthus plant outdoors in Oklahoma much quicker .

Like I say before , you need to be very diligent in checking your local weather .
So what happens if a hoarfrost comes AFTER you plant your sunflower ?
When you know a frost is coming you need to take action .
Also , make certain not to plant your helianthus in your garden too late .
When Should You Start Your Sunflower Seeds Indoors?
Depending on the type of sunflower , it takes roughly 10 to 14 days to raise helianthus from seeded player indoors and then transplant them to your garden . And then another 12 to 18 week to bloom !
For aspecific datethat you should start up sunflower seeds indoors you should :
Not only this , but I recommend again paying close attention to your local conditions report .
It should also be note that the best proficiency for bringing your helianthus flora out of doors is to introduce them ( in their pots ) outside for an hr . And then increase the amount of metre they spend outside each 24-hour interval by an hour until they have been alfresco for 8 hour .
This will “ harden ” your sunflower plant , increase its opportunity of fighting off diseases , insects , droughts , and wet conditions .
If you want to learnWHENto plantANYFlower in Oklahoma , channelise over toHEREand just eccentric in the flower you desire to grow .