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Posts Tagged ‘misshapen’

Cucurbit Hand Pollination with Brush

In optimal conditions insects, mainly bees, pollinate our veggies. Wind works for some plants. Other times due to weather or stresses, humans help!

Wind-pollinated veggies

such as tomatoes, peppers and eggplant, are fertilized by the beating of Bumblebees’ and other insects’ wings, at exactly the right frequency! More pollen is released and pollination is more efficient. It’s called BUZZ POLLINATION! About 11 AM, when the male flower anthers (they hold the pollen) are most open, you can improve your tomato, eggplant and pepper production by giving the cages they are in or the main stems of your plants a few sharp raps, or gently shake the stems, to help the flowers self pollinate. Or hand pollinate using a small paintbrush or cotton swab. In the greenhouse you can help these veggies simply by adding a fan to move the pollen.

Honey bees don’t pollinate tomatoes, peppers, potatoes, eggplant or blueberries, or other Solanaceae, so build solitary bee condos for native bees. Native bees, per Cornell entomology professor Bryan Danforth, are two to three times better pollinators than honeybees, are more plentiful than previously thought and not as prone to the headline-catching colony collapse disorder that has decimated honeybee populations. A Jan 2019 UK study says pollination by wild bees yields larger strawberries than pollination by honey bees! This led them to say it’s worth it to make habitat for them!

The very best Solanaceae pollinator is a Bumblebee!!! See more! Bumblebees fly earlier in spring and bring in our first spring crops! And they don’t sting!


Video Produced by Joshua Cassidy

Please click on the image or here to see the video!

And, did you know Flowers can hear buzzing bees—and it makes their nectar sweeter!

While you are helping your tomatoes pollinate, if you are growing them in cages, also very gently help them up through the cages. Remove any bottom leaves that might touch the ground when weighted with water. Remove any diseased leaves ASAP!

Pollination Cucurbits Male Female Flowers     Pollination by Hand Cucurbits Male Stamen to Female Stigma

Pollination of Cucurbits by hand. In left image, male flower on left, female right.

Squashes, melons and monoecious cucumbers

can easily be hand pollinated. Cukes are notorious for needing help being fertilized! Cucurbits have male and female blooms on the same plant. If there are not enough pollinators about, we need to help. Also, multiple visits from the bees are required for good fruit set and properly shaped cucumbers. Male flowers open in the morning and pollen is only viable during that day. Hand pollinate during the morning hours, using only freshly opened flowers. You can use a small pointy paint brush, a cotton swab, Q-tip, your finger, and move pollen from the male stamen to the center of the female flower. Or the best, most complete method is to take the male flower off the plant, pull the petals off, and gently roll the male flower anther around and over the female stigma in the center of the female flower. The pollen is sticky, so it may take some time. One male anther can pollinate several females. Repeat. Female blooms will simply drop off the plant if they are not pollinated. So when your cukes are in production, you need to do this daily.

Don’t be confused by the little fruit forming under the female flowers and think pollination has already happened. The flower needs to be fertilized, and adequately, or the flower and fruit just fall off. Flowers not pollinated enough, that don’t abort, make misshapen fruits. That goes for corn having irregular to lacking kernels. Misshapen Strawberries are called cat-faced. Squash and cucumbers can be deformed. On an unwindy day, tilt the stalk so the corn tassels are over the silks and tap the stalk. You will see a shower of pollen fall on the silks. You may need to do it from one plant to another so you don’t break the stalk trying to get the pollen to fall on silks on the same plant.

Planting a lot of plants close together stresses plants. At higher densities, plants compete for water, nutrients, and sunlight, and the resulting stress can lead to a higher proportion of male flowers, less female flowers, the ones that produce. If you really want more fruit, give them room to be fruitful. The same goes for other stresses – damage from insects or blowing soil, low light intensities, or water stress – less female flowers are produced.

Weather affects pollination. Sometimes cool overcast days or rain, when bees don’t fly, there is no pollination. Rain washes pollen away. High humidity makes pollen sticky and it won’t fall. Drought is a problem for corn pollination. Too high nighttime temps, day temps 86°F and above, will keep your tomatoes, cucumbers and other vegetables from making pollen or setting fruit unless they are high temp tolerant varieties. Too windy and the pollen is blown away.

If it is your cucumbers that are not pollinating well each year, try parthenocarpic varieties. Parthenocarpic varieties produce only female flowers and do not need pollination to produce fruit. This type of cucumber is also seedless. Try a few varieties and see if you like them.

Pollinator Habitat is crucial! Most important of all is to plant flowers for every season possible in your area, near or right beside your plants, make those bee homes for wild bees! From Cornell: Native bees are two to three times more effective than honeybees! However, if weather isn’t with you or other stressful conditions occur, hand pollinating is the answer.

May your Veggie Basket be overflowing!

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The Green Bean Connection newsletter started as correspondence for the Santa Barbara CA USA, Pilgrim Terrace Community Garden. All three of Santa Barbara city community gardens are very coastal. During late spring/summer we are in a fog belt/marine layer area most years, locally referred to as the May grays, June glooms and August fogusts. Keep that in mind compared to the microclimate niche where your veggie garden is. Bless you for being such a wonderful Earth Steward!

Love your Mother! Plant bird & bee food! Think grey water! Grow organic!

 

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Water is the driver of Nature.  –   Leonardo da Vinci

When, Who, How, & How Much to Water

Midday, on a hot day, watering will burn the leaves.
Evening watering promotes mildew, fungus growth.  Plants drink during the day, so AM watering is best.

Plants that need little or no water and why:
Onions, garlic, that are flowering, going to bulb, needing to dry
End of season tomatoes that you want to have a stronger flavor
Tomatoes in soil with Fusarium and Verticillium Wilt fungi in the soil.  Fungi don’t do well in dry soil.

Plants that need water almost daily, sometimes twice daily 
Shallow rooted beans, beets, bunch onions, cucumbers, peas, strawberries
Celery and chard, lettuce, arugula – leaf crops, to keep them growing fast, tender and tasting sweet.
Planted seeds, seedlings, newly planted transplants, must be kept moist; if they dry, they die.  Put up temporary shade.

Use a watering can for seeds and tender seedlings so seeds aren’t washed away or seedlings broken.

Most plants need only an inch of water once a week unless it is hot and/or windy weather.  Most gardeners over water by two times as much as is needed!  Overwatering drowns plants, and kills micro soil organisms; they don’t get oxygen.  Soil structure is destroyed as air spaces cave in.  Overwatering also causes poor root growth making it difficult to move enough water to the leaves during hot weather.

Irregular watering results in misshapen fruits, tomato flower drop, can stop production

Fuzzy plants like tomatoes, eggplant, don’t do well with watering on their leaves.  Water underneath please.

Plants that are mulched generally need less water.  Poke your finger in the soil to see how deeply it is moist.  More on mulching next week.

Water and Pests & Diseases 

Overhead watering contributes to mildew on beans, squash, peas.  It spreads Strawberry Leaf Spot and other waterborne diseases 

Tomatoes:  stop watering when about a foot tall.  Water around them, but not right at them.  Keep back about a 2’ perimeter to reduce Fusarium and Verticillium Wilt fungi.  If you do water them, on mature plants, cut off the lower leaves, up to 18” high, to prevent soil splash when watering.  The fungi are especially taken up by leaves touching the ground.

Flush off aphids and the undersides of broccoli leaves and broc side shoots, kale leaves, especially the curly varieties.

Flush white flies from the undersides of broccoli leaves, kale, beans

BE JUICY!

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Strawberry Tips for Tasty Super Berries!

  • Strawberries are in the Rose family.
  • The average berry has 200 seeds, the only fruit whose seeds are on its exterior surface!  The seeds are really the fruit!
  • Usually grown from runner daughters, they will grow from seed.  Just throw down caps you bit the berry from.  Sooner or later, you will have a plant you didn’t ‘plant.’  Strawberry seed saving is simple.
  • Eight out of 10 strawberries grown in the U.S. are grown in California!
  • Strawberries came in second to blueberries in the USDA’s analysis of antioxidant capacity of 40 fruits and vegetables. They are also rich in dietary fiber and manganese, and contain more vitamin C than any other berry.

Image courtesy of StrawberryPlants.org

When do I plant strawberries?  Not now, NOVEMBER 1 to 10!  Yes, it’s that specific for winter chill at the perfect time!  They start producing runners now, but cut them off until early July!  Then let them grow, and cut off the new baby plants mid October for November planting.  Or, just let them grow to fill spots where, for one reason or another, a plant has gone missing, needs replacing, and/or another could fit in.  When those needs are taken care of, cut off the rest of the runners.  These runner plant babies will grow so fast you will be getting berries from them late summer and fall if you have everbearers/day neutral types!!

My plant isn’t producing….  

Variety
 – If it is an everbearer, day neutral, variety it will produce almost all year.  June/spring bearers put out a prolific batch in June, then it’s over.  No amount of care or feeding is going to make that plant have berries after June.  Sorry.  Best to get the varieties your local nursery carries.  Or talk with them about special ordering well in advance, so they can get the ones you want.
Temps – cold weather slows down pollinators.
Shaded – believe me, strawberries like all-day sun!  If you are going to tuck them in among other plants, be sure to put them on the sunny side!
Hungry – think about it!  A strawberry plant is often pumping out several berries at a time!  They are using up soil nutrition, so feed them!  Try a light solution of fish emulsion/kelp every other week over some sprinkled seabird guano or a well aged manure.  Give your strawberries a little fertilizer in the 0-10-10 proportions; that’s lots of phosphorus and potassium for strong roots and uptake of nutrients, blooms and fruits!
Water – don’t let them dry out, they will stop producing.  This month they tend to grow more leaves, send out runners.  Clip off the runners for now, so they don’t take your plant’s energy away from producing berries, unless you want more plants right away.
Mulching is good.  They love pine needle mulch, if you have some about, because they prefer slightly acidic soil.  Drape your berries over pine cones to keep them off the ground, out of the slug zone.
Age – First year plants and 3rd year plants don’t produce as well.

My berries are really tiny! 
Strawberry varieties vary from mammoth chocolatiers, to midget but mighty tasty alpines.  If it isn’t a variety issue, it may be diseased.  See below please.

Misshapen berries or split in two sections with a hole in the center 
Irregular watering  Your berry grows fast when it has water, then is restricted when it doesn’t….
Western Tarnished Plant Bugs,
feed on the flowers and developing surface seeds that stimulate growth causing misshapen berries, hard clusters of yellow seeds on the tip of the fruit.  Clean up debris.  Once you see this, you are too late to prevent it any further.  Bummer.  UC Davis IPM Integrated Pest Management on Lygus Hesperus.  Image of typical cat-faced berries.
Pollination Strawberry flowers are usually open and attractive to bees only a day or less.  Temperatures below 60F, low night temperatures, & high humidity result in inadequate pollination, low yields of small or misshapen fruit.  Strawberries require multiple pollination for perfect fruit formation. Generally, as the number of pollinator visits increases, there will be an increase in fruit set, number of seed per fruit, fruit shape, and fruit weight.  ABOUT BEES:  per NCSU ‘Bees rarely fly when the temperature is below 55°F. Flights seldom intensify until the temperature reaches 70°F. Wind speed beyond 15 miles per hour seriously slows bee activity. Cool, cloudy weather and threatening storms greatly reduce bee flights. In poor weather, bees foraging at more distant locations will remain in the hive, and only those that have been foraging nearby will be active.  Pumpkin, squash, and watermelon flowers normally open around daybreak and close by noon; whereas, cucumbers, strawberries, and muskmelons generally remain open the entire day.’  So if the weather isn’t right THE DAY OR MORNING your flower opens…..

Whole plant has yellow leaves.  The most common cause is nutrient deficiencies due to overwatering.  Overwatering causes poor root growth making it difficult to move enough water to the leaves during hot weather.  Lay back on watering; give your babies some Nitrogen –fish emulsion/kelp.

Strawberry Pests
Pecked   If birds are pecking your berries, put bird netting or a wire dome over them.

Rebecca & David Barker, Pilgrim Terrace Community Garden, Plot 41, staked the chicken wire in place, push it up to harvest, down to just the right height when done!

Holes in them, Chewed  Silvery slime trails are the giveaway!  Use the pine cones to drape your berries over to keep them off the ground.  Put down some Sluggo or the like, to kill off night-time nibblers, slugs, snails.  Harvest regularly before the berry gets soft and smelly, just before the buglets are attracted!  Those little black pointy worms?  I’m trying to find out what they are.  If you know, let me know, ok?!
Uprooted  Sad to say, that sounds like ‘possums, raccoon, or skunk.  They are looking for your earth worms or grubs.  Just like bunnies, these critters won’t jump a low barrier.  They just go around it.  So install a foot tall perimeter of wire pieces, black plastic plant flats, old trellis parts, whatever you have around, or go get something that looks good to you so you will be happy.  Relocating the critters is a good choice because, they do have children, that have children, that…

Strawberry Diseases  StrawberryPlants.org for full list of diseases.  Here’s a link to the 3 Most common leaf diseases with images.

Angular Leaf Spot – exactly that.  Spotted leaves.  A cosmetic problem until it isn’t.  Your plant will produce, but it won’t thrive.  Spread by water, harvest before you water, water under the leaves, remove badly spotted leaves, don’t use them as mulch, wash your hands before going on to another plant.
Strawberry Blight – the fungus is often confused with angular leaf spot, overwinters in old leaves, remove them.  Remove old leaves from runner plants before setting.  All day sun, well-drained soil, in an area with circulation, equals less fungus.  For good air circulation, plant far enough apart, remove weeds, remove, replant and/or give away runner baby sets.  Plant resistant varieties for your area of your state.  Discussion of SoCal varieties.  When you buy new plants be sure they are certified from a disease-free nursery.  If you use a fungicide, spray the underside of leaves as well as the tops.

Successful SoCal varieties!

Chandler is the most widely commercially grown strawberry in California.  High yield, early producer, large southern berry.  It’s a June bearer, so if you want year round supply, this is not your berry.
Seascape is an ever-bearing, big day neutral, all year strawberry, harvests are more abundant in late spring. High yield, resistant to most diseases except leaf spot.  Reliable producer in fall, performs well in hot, dry climates.  Berry is bright red inside and out!
Oso Grande Another June bearer, high yield big berry, good in warm climates.

Eat your red  plump strawberries!  Fresh from your garden, strawberry Sundae, strawberry sauce, strawberry pie, cake, bread, strawberry ice cream, whipped cream, yoghurt, cream cheese, cheesecake, strawberry shake, chocolate dipped, strawberry lemonade, strawberry Syrah, and, as always, the traditional, Strawberry Shortcake!! 

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