Online Phenology Models and Degree-day Calculator
info K0HYD Goddard KS  station: AU510 APRSWXNET elev: 1404 ft  lat/long: 37.6642 -97.6100
  Select location by clicking on pin in Google Map above
 Japanese knotweed
USA NPN Guide, UMN model
  info Model category: 

  Select model: (see list)   (model params) 

  Output in:

  Starting date instructions: Calendar - Jan. 1

  End:      Note - start date reset to database default. 
  Model validation status: research model - not yet validated Region(s): Minnesota

  info Forecast type: 


Weather data CAUTION: This model is not intended for use with user-supplied start dates.
QA score 0.99; 0 days missing
Date DDs Event
 Mar 4 79 days ago 607 First leaves
 Mar 7 76 days ago 664 50% leaves
 Jun 27 36 days away 4227 First flower buds
 Jul 5 44 days away 4581 50% flower buds
 Jul 10 49 days away 4822 First open flowers

  info  Output:  Simple header  No table  Graph precip 

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Oregon IPM Center at Oregon State University IPM PIPE The PRISM Group at OSU Western
Region Pest Management Center National Institute of
Food and Agriculture
All data provided "as is" and users assume all risk in its use - see full disclaimer. All NWS derived data is not subject to copyright protection. This site hosted by the Integrated Plant Protection Center at Oregon State University with support from the USDA National Plant Diagnostic Network, The OSU Agricultural Experiment Station, various USDA CSREES/NIFA grants, USDA SARE, USDA RMA, and USDA IPM Centers - Western Region. Climate map data provided by OSU PRISM Group, real-time public weather data provided by U. Utah Mesowest and other networks including WSU AgWeatherNET, AGRIMET, CPS Adcon Networks, IFPNet Automata, California CIMIS, California PestCast, and others.
Previous versions online since May 16, 1997, this version 5.6, updated Jan 3, 2024
Contact Len Coop at if you have any questions about this program.