Garden Mums – 2019 Production and Protection Tips

This post was contributed to by Drs. Sarah Jandricic and Chevonne Dayboll.

Summer is in full swing, and so too are garden mums.  As you get ready for the next few months, here are a few tips to keep your crop on track.

Drip line irrigation can be a more efficient way of delivering water and nutrients to outdoor crops.

Irrigation method matters!

There are plenty of options for irrigation in potted outdoor crops, but not all are created equal if you are trying to maximize your water efficiency.  Overhead irrigation by boom, or sprinkler is not efficient if your pots are not spaced tightly.  Canopy sizes in the later months of production may make this impossible, especially if you choose to go with final spacing when pots first move outside.  These methods of irrigation can also lead to pots that are too dry (not watered) or too wet (over watered). Plants can only use water that makes it into the pot, so low volume drip line or tape is a more effective way to delivering usable water to your outdoor crops.

Continue reading “Garden Mums – 2019 Production and Protection Tips”

Advertisements

99 Poinsettia Problems: Your Monthly Scouting Guide

JF14

This post on poinsettia problems was contributed to by Drs. Chevonne Dayboll and Sarah Jandricic.

Okay, so Poinsettia don’t really get that many problems.  But when issues arise, they can hit a crop fast and hard.  Whitefly, Lewis mite, root rots, and nutritional issues can all quickly derail a quality crop.

Here’s a month by month guide on what you should be looking for to prevent small problems from becoming big issues.

 

 

Continue reading “99 Poinsettia Problems: Your Monthly Scouting Guide”

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.

Continue reading “Poinsettia Prep Refresher”

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.

IMG_0690

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”