Do you require to grow cress green in Arizona , but do n’t have it off when to plant them ?
Planting watercress is not as easy as it seems .
Here ’s why :

So if you engraft them outside too early in the spring they will conk out . And if you plant them too late , your cresson wo n’t produce a harvest before the first frost make it in the fall .
Today , I ’m going to learn you the idealistic clock time to set watercress in Arizona :
When to Plant watercress in Arizona
As you may have already estimate , you need to pay very close attention to your local weather condition in the spring . Specifically , you are move to want to watch when the last Robert Lee Frost hap .
In general , when there has n’t been a frost for two workweek , you are SAFE to embed your cresson outside in Arizona !
For your reference , I have created this table for average frost dates for most major cities in Arizona . If your city is not listed below you could find its Last & First Frost DatesHERE .

Arizona Last & First Frost Dates
regrettably , Mother Nature plays cruel tricks on us every year .
It should be noted that the above dates are just averages .

There are geezerhood when the last frost comesMUCHlater . Sometimes , the last frost happen much earlier and you’re able to get your watercress planted out of doors in Arizona much quicker .
Like I say before , you require to be very persevering in control your local weather .
So what materialize if a freeze comes AFTER you establish your cresson ?
When you know a frost is coming you need to take action .
Also , make certain not to found your cress green in your garden too latterly .
When Should You Start Your Watercress Seeds Indoors?
Depending on the type of watercress , it take rough 15 - 20 days to grow cress green from ejaculate indoors and then graft them to your garden .
For aspecific datethat you should start cresson germ indoors you should :
Not only this , but I advocate again paying closemouthed attention to your local atmospheric condition report .
It should also be noted that the best proficiency for bringing your cress green plants outside is to introduce them ( in their pots ) outside for an hour . And then increase the amount of metre they spend outside each day by an hour until they have been outside for 8 hour .
This will “ indurate ” your cresson plant , increasing its chances of fighting off diseases , louse , droughts , and sozzled circumstance .
If you require to learnWHENto plantANYVegetable in Arizona , manoeuvre over toHEREand just type in the veggie you want to produce .