Growing broccoli in Illinois can be a rewarding experience for gardeners of all skill levels . The temperate clime of the state , combined with the plentiful rain , make it an ideal place to educate this vegetable .
Brassica oleracea italica can be harvested from early summertime through late fall , and its versatility have it a great gain to any garden .
With the right care and attention , broccoli plants can produce a great crop of healthy head for bask fresh or preserving for later . With a small piece of knowledge and effort , anyone can successfully raise broccoli in Illinois .

Gardening in Illinois
Gardening in Illinois is well done during the warm month of the year . The clime in Illinois is classified as humid continental , with warm summers and cold wintertime . Spring and spill tend to be mild , while the summer and winter calendar month can be quite uttermost .
The first rime in Illinois typically occurs in late September or early October , while the last frost typically take place in late April or early May . This consecrate a growing time of year of approximately six months . The mean temperature in the summer month is in the mid-80s , while the average temperature in the wintertime month is in the low-20s .
The amount of rain in Illinois varies throughout the twelvemonth , with the highest amounts occurring in the spring . Illinois typically get 35 - 45 inches of rainwater each year .
Popular varieties of broccoli in Illinois
There are several popular broccoli varieties that gardeners relish growing due to their unequaled feature , taste , and adaptability . Here are some favorite :
By selecting a Brassica oleracea italica variety that befit your specific horticulture needs and climate , you’re able to enjoy a successful and liberal harvesting of this nourishing and versatile vegetable .
When to plant broccoli seeds in Illinois
The idealistic time to set about broccoli seeds indoors is 6 - 8 weeks before the last expect frost date in your area . This allows the seedlings to grow strong and evolve a robust root system before being transplanted outdoors . Knowing the modal last frost engagement for your region is all important for watch the best time to begin your seed . In Illinois , your final frost in the spring usually takes lieu around :
Caring for Brassica oleracea italica seedling is pretty easy , just follow this simple guide on the unconscious process :
When to plant broccoli outdoors
know the exact timing for planting Brassica oleracea italica out of doors in Illinois is authoritative for getting the best harvest . Too early and you may lose your plant to ice . Too of late and you might not get a very good crop .
You should plant broccoli plants outdoors when the soil temperature is consistently above 45 ° F ( 7 ° C ) and the peril of hoar has passed . The final frost date in Illinois is :
Before transplanting your broccoli seedlings outdoors , check that to harden them off by step by step give away them to out-of-door shape for 7 - 10 sidereal day . This appendage will facilitate the plant acclimate to the outside environment and reduce transplant seismic disturbance .
Caring for broccoli
Once you ’ve planted your Brassica oleracea italica outdoors in Illinois , it ’s crucial to worry for them properly ! This guide will limn essential care tips for your Brassica oleracea italica plant to ensure a healthy , bountiful harvest once they are planted outdoors .
By observe these guardianship tip , you will be well on your way to enjoying a healthy and rich Brassica oleracea italica harvest time from your garden .
When to harvest broccoli in Illinois
You should project to harvest Brassica oleracea italica when the heads are firm , compact , and dark green , before the individual florets start to split or turn yellow . This is typically when the read/write head reach its maximal size , which alter depending on the variety . It is important to supervise the development of the broccoli head closely , as it can transition from being ready to harvest to over - mature very quick .
To glean broccoli , follow these stride :