Poinsettia Prep Refresher

JF14Now that poinsettias are safely tucked into their prop trays and the threat of Erwinia (Pectobacterium) is almost over, it’s time to think about other Poinsettia issues.

Root rots, nutritional issues, environmental stress and PGR mistakes can all be costly in this high-value crop.  Read on for common pitfalls and how to avoid them.

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Tips and Tricks for Outdoor Mum and Hydrangea Production this Summer

This post was co-authored by Dr. Jeanine West, Flowers Canada Ontario’s Environment Specialist

outdoor 6Do you grow hardy mums and hydrangeas outdoors?  If so, this blog post is for you!  Flowers Canada Ontario, the Soil Resource Group and OMAFRA have collected data about fertilizer and water management in outdoor greenhouse crops over the last few summers, and have some updated production information for growers to think about over this year’s season.

The goal of the study was to look at ways to improve fertilizer and irrigation efficiency outside of the greenhouse.  Continue reading “Tips and Tricks for Outdoor Mum and Hydrangea Production this Summer”

Oh dear! It’s Oedema.

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Oedema on the young leaves in this begonia basket.

Oedema, that physiological disorder that appears during periods of low light and high humidity.  There’s been quite a bit of it reported in Ontario greenhouses this spring, and unfortunately it’s related to the long rainy (or snowy!) spring we’ve been having.  If you’ve noticed salt-like crystals, odd tumour-like growths or water-soaked spots on either side of your plant leaves this disorder might be the culprit.

The disorder affects a wide variety of greenhouse ornamentals.  It’s usually noticed in spring crops like sweet potato vine (ipomea), geranium, begonia and/or petunia. Continue reading “Oh dear! It’s Oedema.”

It’s “B” Season! Watch for Botrytis, Broad Mite and Burn.

Honeybee 2Although native bees and honeybees may just be starting to gather strength and are beginning to fly outside, other “B’s” have been of growing concern in the greenhouse for some time now.

These include common spring bedding crop problems like Botrytis cinera (aka grey mold), Broad mites, and leaf burn (from a variety of causes).

Keep reading for tips on how to manage these issues during this time of year.

Continue reading “It’s “B” Season! Watch for Botrytis, Broad Mite and Burn.”

Considerations for fine-tuning your fertilizer program

How do you typically fertilize floriculture crops in your greenhouse?  Based on how the plant performs? Maybe based on recommendations from your consultant or supplier?  Do you do it the way it’s always been done?  Do you know why it was always done that way? Continue reading “Considerations for fine-tuning your fertilizer program”

Demonstration Day – Best Management Practices for Outdoor Mum and Hydrangea Growers

Calling all outdoor chrysanthemum and hydrangea growers! Do you currently produce these crops outdoors during the summer months?  Would you like to learn more about how adjusting your fertilizer program could potentially lead to savings while maintaining the quality of the crop? How about learning about how to best manage your water and fertilizer program in an outdoor setting? Continue reading “Demonstration Day – Best Management Practices for Outdoor Mum and Hydrangea Growers”

Botrytis Bumming You Out?

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Botrytis spots on Primula petals.

With the intense period of rain we just had, and with MORE rain coming on Friday, it’s time to think about Botrytis control and prevention.  One of the most common and destructive diseases of greenhouse crops, outbreaks usually follow periods of cool, damp, cloudy weather.  Unfortunately, I can’t order up more sun for you, but I CAN suggest some management tactics.

 

Continue reading “Botrytis Bumming You Out?”