Do you want to grow sunflower in Colorado , but do n’t sleep together when to plant them ?

Planting sunflower is not as easy as it seems .

Here ’s why :

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So if you plant them outside too early on in the bounce they will die . And if you plant them too tardily , your sunflower wo n’t bring out a flower .

Today , I ’m going to learn you the ideal metre to plant sunflower in Colorado :

When to Plant Sunflower in Colorado

As you may have already opine , you demand to give very skinny attending to your local weather in the give . Specifically , you are move to postulate to watch when the last frost come about .

In general , when there has n’t been a Robert Lee Frost for two week , you are SAFE to plant your sunflower outside in Colorado !

For your reference , I have created this tabular array for modal hoarfrost dates for most major cities in Colorado . If your metropolis is not list below you could find its Last & First Frost DatesHERE .

Colorado Frost Dates

Colorado Last & First Frost Dates

Unfortunately , Mother Nature plays vicious tricks on us every yr .

It should be observe that the above dates are just averages .

There are years when the last Robert Lee Frost comesMUCHlater . Sometimes , the last hoar happens much in the beginning and you may get your sunflower set alfresco in Colorado much quicker .

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Like I say before , you require to be very persevering in check your local weather .

So what happen if a frost do AFTER you constitute your helianthus ?

When you know a frost is coming you demand to take action .

Also , make certain not to plant your sunflower in your garden too deep .

When Should You Start Your Sunflower Seeds Indoors?

calculate on the type of helianthus , it takes roughly 10 to 14 days to grow sunflower from seed indoors and then graft them to your garden . And then another 12 to 18 weeks to bloom !

For aspecific datethat you should start sunflower sow indoors you should :

Not only this , but I recommend again paying near attending to your local weather report .

It should also be noted that the best technique for bringing your sunflower industrial plant out of doors is to introduce them ( in their pots ) outside for an hour . And then increase the amount of time they expend outside each mean solar day by an hour until they have been outside for 8 hour .

This will “ harden ” your helianthus plant life , increasing its chances of fighting off diseases , insects , drouth , and wet conditions .

If you need to learnWHENto plantANYFlower in Colorado , guide over toHEREand just type in the flower you need to grow .