Tag: squash

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Managing Powdery Mildew

Your walking around the garden looking at the all the beauty and notice this white powder that looks like its floating across your leaves.   What is that?  Well if you have had lots of rain, lots of humidity or have plants growing in a tight spot then you are more than likely dealing with powdery mildew. 

Powdery Mildew showing up on my Gourds!

About Powdery Mildew

Powdery Mildew is a fungal disease that actually has several different strains.  Figures it would want to ensure it is available to a wide variation of plants!  It is most active in temperatures that range from around 68 to 90 degrees nights being the cooler of the range.   This means one will find it more often in their spring and fall beds which is right where my issues are showing up!  It’s also more often to show up during heavy rainy periods with high humidity.

Because there are multiple strains you will not always find it spreading; however, if you have like families of plants together watch out.  It can take over quickly if not cared for.  For example if you plant your Cucurbita together (Squash, Pumpkin etc) what ever strain hits one will quickly spread to the next.

Powdery Mildew on my pumpkins which are growing right next to cucumbers

What is on your Zinnias (another plant that is susceptible) will not effect your roses It will however effect other plants that are members of the same composite family.  Powdery Mildew is air born so be careful when removing effected leaves and never place them in your compost.

Easy Tips for Managing Powdery Mildew

  • The most common recipe is Baking Soda(1 tbsp); Dish-washing soap (2 tsp) and one gallon of water.  Spray this on your plants when the sun is low so as not to burn them.  Baking soda can also be strong for some plants so test them one day and check them the next before full application.  Adjust the tbsp down accordingly to 1/2 tbsp if needed.
  • Neem Oil, the pure organic cold pressed oil not what is pre-mixed, is also great.  Mix 1 tsp in with your baking soda. You can also substitute Neem Oil at 2 tsp in place of baking powder.
  • Milk has been reported to help stop the growth of powdery mildew.  I have not tried this recipe. I plan to test it out this month with the issues I have going on right now. I will update on that result!  Mix is 60/40 with milk at 60%.

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Squash Vine Borer – Enemy Number 1 of Cucurbita’s

If you love growing squash then plan for this insect; because the squash vine borer moth is a bad one! There is nothing worse then walking around your garden and seeing your beautiful zucchini or summer squash healthy and strong and returning the next day to find it wilted and gone; and, that is about how fast it seems to happen! As such, anyone planning to grow plants in the squash family needs to be aware  of the Melittia cucurbitae moth, also known as the squash vine borer! This ensures you have a chance of stopping these moths from destroying your plants or at least lets you know what they look like so you can just beat them to death when you see them ha!   

About

Native to North America the  squash vine borer could actually be confused with a beneficial insect.  After all, unlike most moths,  it comes out in the day and flies with very quick bee like movements.  It has a bright orange and red body that I could almost say is pretty.  However, after years of fighting these suckers I firmly believe their color has one purpose, so you see them and know that evil is upon you!  These borer moths love squash, zucchini, pumpkins, and gourds all of which I am growing in my garden!  I think it is safe to say that I pretty much hate them; yet, as you can see from this quick video the borer does not care, it still loves my garden!

Squash vine borers will grow in a brown cocoon in your soil, living there through the winter. They emerge in the summer months and fly around laying their eggs on your food!  Larvae hatch within 7 to 14 days and proceed to bore their way into the hollow stems of your plants where they eat them from the inside out for another 14 to 28 days. If you have missed the egg stage, you may also see the small white worms with a black head on your stalks. These worms do not stay small long.

Tips

There are several organic things you can do to manage the squash vine borer.

  • Look for the eggs of the borer; and look for them often especially during their season, this will help you stop the damage before it begins! Eggs can be found on the underside of the leaves in clusters and can also be found on their own on the stems of the plants.  I have read some things that say they are at the base of the stems, they are! These moths will place their eggs wherever they land so they can also be found at the top and the middle and everywhere in between!

If the eggs are found remove them. Wipe them off with a damp washcloth, your fingernail, a butter knife or the edge of scissors etc. Also Look for damage from the worms. They can be little small holes with sawdust like residue around the wound or large holes in the major vine area of the plant. 

  • For the smaller stem holes use a pointed object to dig out the hole some.    Place your sprayer on the hole and fill the stem up with either Neem Oil mix or BT.  I like to tell them to just try and swim out of that while I am filling it up!
  • For larger holes if you can see the worm remove it or stab it and leave it there.  If you cannot see it, use the same method and fill the hole. Worms will ingest the Neem or BT mix and die in the vine or stem. Cover any of the large holes in the vine with fresh compost so they can heal and continue growing.

Sprinkling wood ashes on the stems along with Diatomaceous Earth (DE),  black pepper around the plants or growing radishes near them has also been reported as a deterrent for the moths.  I personally have not tried the ashes or pepper, I do use DE and I have had luck with radishes as a companion plant!  Crop covers are also an option with manual pollination of your plants.  I don't prefer this method.

It's even more important when growing squash to till your soil in the spring and the winter to remove the overwintering cocoons.  Also, strictly follow the rules of rotation and attempt to never place your plants in the same spot two years in a row. Last but not least, do NOT put your spent squash in your compost; if possible you should actually burn it.  If you can't burn it place the leaves and stems in a plastic bag and leave them in the sun.  Don't feel bad about any evil laughs that slip out as you imagine the slow death of any borers trapped in the bag!

My best luck has been with the "look for eggs and spray inside the stems method" if I miss them.  What has worked for you in protecting your plants from this enemy?  Do you have some tips to share?  If so leave us a message we would love to hear them!

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Quick Hit! - Looking for the Squash Vine Borer

Zucchini - Black Beauty Squash

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Zucchini – Black Beauty Squash

About Black Beauty Squash

By far one of the most beautiful vegetables ever! The Black Beauty Squash earns its name with dark glossy green leaves growing as large as 12 inches across and bright beautiful yellow flowers known to grow up to 6″ across.   The fruit is no slacker either with its dark green skin and creamy white flesh it’s what I like to call a Forest Gump vegetable.  You can fry it, boil it, steam it, bake it, grill it, put it on a burger, put it in a casserole, make bread out of it and freeze it to have it all again later!

Its only down side is that morning is the only time those beautiful flowers show themselves.  This of course just gives us the perfect reason to take that cup of coffee and wander to the garden for a look (as if we needed another one!).

How to Grow

The Black Beauty is a hybrid plant and according to Bonnie Plants started in 1957.  It is a part of the cucurbita pepo family which includes acorns, pumpkins, gourds, crook neck squash, cocozelle, scallops and marrow.  Growing this zucchini is not difficult.  It needs consistent but not over watering with well-drained soil and full sun.

  • Soak the seeds in water for about 30 minutes. 
  • Start indoors three to four weeks ahead of time or sow it straight in the ground once the soil temperatures reach at least 70 degrees.
  • Pick fruit when it is about 6-8″ long.  You can grow it longer however the uses decline as the seeds get large and the flesh is not as soft.

Tips

  • These babies need full sun up to six hours. However, as with other full sun plants if you’re in the South don’t make the mistake of thinking it will take your 100 degree days; it won’t!  Plan accordingly and have some partial shade in the afternoon to help it out.
  • My Zucchini has done well with good compost to get it going and a bit of Epsom salt and coffee grinds mixed in with the soil monthly.
  • Zucchini is subject to power mildew so avoid watering the leaves of this plant; water from below.
  • Check daily for fruit!  Watch for them!  these critters can hide on you under those big leaves and before you know it you have a monster on your hands.

Humans are not the only ones to love Zucchini; and, more than one Gardner (myself included) has been brought to tears over two of its arch enemies the    Squash Vine Borers and Squash bugs.  Be on the lookout for these insects and plan for quick action on managing them.  Natural plant companions that also act as repellents  to the bugs and borers include:

  • Radishes (Iceberg Radishes especially)
  • Parsley
  • Nasturtiums
  • Peppermint

 

Other Companion Plants Include

  • Corn
  • Beans
  • Beets
  • Lettuce
  • Lovage
  • Peppers
  • Spinach
  • Squash
  • Tomatoes
  • Do NOT grow with Potatoes!

 

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