Fireblight across the plant library
6 of the 505 plant guides in this library name fireblight among their diseases. Every one is listed below, linked to its guide and grouped by the kind of plant it is, so you can see at a glance which corners of a garden it turns up in.
This is the library read down a column instead of across a row. Each plant guide names its own diseases; nobody publishes the other view — which of the plants you actually grow share one, and whether the timing they record agrees.
The 6 plants that list fireblight
Grouped by plant type. Where the library attached a note to the entry — “rare”, “on seedlings”, “in wet clay” — that note is printed next to the plant, verbatim, because two plants can name the same disease and mean opposite things by it.
trees5
Where it concentrates
Botanical families with more than one affected plant in the library, counted from the same 6 guides above. 6 of 6 are Rosaceae.
- Rosaceae6 plants
How the library qualifies it
Every distinct note the guides attach to an entry for fireblight, verbatim, with how many plants carry it. The other 1 guide lists it bare, with no qualifier at all.
- choose resistant 'Winter King'
- Major threat
- minor
- prune strikes out
- the big one
Shared timing — and where it doesn’t agree
These entries do not describe one shared window. The 4 guides that record a timing for fireblight have no phrase in common, so there is no consensus to report and none is invented here. They are reproduced below exactly as the library holds them, each next to the plant it belongs to.
Quoted verbatim from the spray-timing fields of the guides that name fireblight. Another 1 of the 6 record a program aimed at a different problem; those stay on their own guides.
- Dormant
- Dormant Oil (Mites/Scale): Apply in late winter before bud break when temps >40°F for 24 hours. Copper (Fireblight): Apply at silver tip green tip stage.
- Growing
- Watch fireblight in bloom-time warmth.
- Dormant
- Dormant Oil (Psylla/Scale): Apply in late winter before bud break. Copper: Reduce Fireblight inoculum.
- Growing
- Bloom: Streptomycin ONLY if conditions are warm (>65°F) and wet (Fireblight risk). Petal Fall: Insecticide.
- Dormant
- Copper at bud swell where fireblight or rust has history.
Timing only — the label is the law
This page reports when the guides in this library say to watch for fireblight and when a treatment is worth considering. It is not a recommendation to apply any product. Read and follow the product label before you spray — under federal law the label is the legal instruction, and using a pesticide against it is illegal.
- Check the pre-harvest interval. Every product that’s cleared for an edible crop sets a minimum number of days between spraying and picking. Find it on the label before you spray anything you intend to eat.
- Check the re-entry interval before you or anyone else works in the treated area again, and use the protective equipment the label names.
- Confirm the product is registered for your crop in your state. This page groups many different crops together, and a product legal on one of them is not legal on all of them — state registrations differ too. Your state pesticide agency or local extension office can confirm both.
- Rates and mixing instructions come from the label, never from us. We don’t publish them because they differ by product and formulation.