Crown Rot across the plant library
21 of the 505 plant guides in this library name crown rot 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 21 plants that list crown rot
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.
perennials12
Coral Bells (Heuchera)Heuchera hybrids
CoreopsisCoreopsis verticillatain wet clay
DelphiniumDelphinium elatum
Hellebore (Lenten Rose)Helleborus × hybridus
HostaHosta spp.
Lamb's EarStachys byzantinain humid/wet conditions — the main issue
LupineLupinus 'Russell Hybrids'in heat/wet
Pasque FlowerPulsatilla vulgarisin wet soil
Prairie SmokeGeum triflorumin wet soil
RhubarbRheum rhabarbarumin wet soil
Shasta DaisyLeucanthemum × superbum
Water LilyNymphaea hybrids
biennials3
Where it concentrates
Botanical families with more than one affected plant in the library, counted from the same 21 guides above. 3 of 21 are Ranunculaceae.
- Ranunculaceae3 plants
- Asparagaceae2 plants
- Asteraceae2 plants
How the library qualifies it
Every distinct note the guides attach to an entry for crown rot, verbatim, with how many plants carry it. The other 8 guides list it bare, with no qualifier at all.
- in wet soil×4
- in wet clay×2
- from water in the center
- in heat/wet
- in humid clay
- in humid/wet conditions — the main issue
- in soggy beds
- in soggy soil
- water sitting in the crown
Shared timing — and where it doesn’t agree
The library records no treatment window for crown rot. 10 of these 21 guides do record a spray or management program, but every one of them is about something else — a blight schedule, a curculio spray, a mildew note. None names crown rot. Rather than manufacture a consensus out of unrelated entries, this page reports the absence. The individual guides carry whatever timing the library does hold.
Timing only — the label is the law
This page reports when the guides in this library say to watch for crown rot 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.
What else these plants get
Counted over the same 21 guides: the other problems most often listed on a plant that lists crown rot. These are co-occurrences in the library’s own records, not a claim that one causes another.