Winter Squash Trial, 2009
Description of Project: Executive Summary
The McClellan Ranch Project is located in the community gardens of the City of Cupertino at McClellan Ranch Park. The team members interface with community gardeners there on a regular basis and discuss any problems presented during work days.The objective of the project is to do trials of vegetables that the local gardeners might be able to grow and give advice to gardeners when they stop by. A lot of time is spent talking to community gardeners on work days. At an appropriate time during the growing cycle, the team puts on a Field Day and tasting of the vegetable of the year and invites the public to the event. The team thus provides additional input to the community to help them with their gardening activities. This year winter squash was the vegetable of choice and 17 varieties were planted. Five varieties were not available for picking on 10 October but examples of two of these were donated for display on the Field Day. The public Field Day was held on October 17, 2009. Flyers announcing the Field Day were posted in a variety of locations in Cupertino and Sunnyvale. The weekly papers for Cupertino and Sunnyvale post free announcements of events on a space available basis. Our event was not in those papers this year but was mentioned in the San Jose Mercury News.
Field Project Report
Seventeen varieties of winter squash which could be grown by the home gardener were planted. Plant characteristics along with pest and disease problems were observed and recorded.A Public Field Day was held on October 17 when people could see a display of the different varieties of squash and could take guided tours of the garden.Fourteen varieties of winter squash were available for display. Due to the minimal advertising only about 93 people attended vs an average of ~150 in years when we were allowed to pass out flyers at the Cupertino Farmers Market on the day before the Field Day.Rating sheets were available for our tasting where 23 were filled out and tabulated to determine the top varieties based on flavor and texture.(See the section on Tasting Results.) When selecting which squash varieties to grow, home gardeners can consult these tasting results as well as the plant characteristics and pest and disease information.
The public will find that squash are easy to grow but most of the varieties require a lot more space than we had anticipated. The soil needs to be properly prepared.
Soil Preparation and Planting
The McClellan Ranch team uses organic gardening methods for the vegetable trials. Preparations for spring planting began in April. Squash seeds were planted 23 May. In prior years we have planted fava beans in November but city trail construction interfered. Wood chips were put into the aisles between the beds that had been laid out.![]() |
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| Winter Squash Project with drip irrigation 27 June 2009 | Winter Squash Project 29 August 2009 |
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| Winter Squash Plants as seen from South to North |
Winter Squash: Plants as seen from North West corner of Garden Plot |
Plant Characteristics
| Variety | Stated Number of days to maturity | Color of ripe squash rind | Color of inside of squash | Other Information |
| Blue Hubbard | 100 | Blue-gray | Deep gold | Needs room to romp |
| Bon Bon Winter | - | Dark green | Bright orange | Drum shape 2 – 4 lbs, semi-bush |
| Cornell's Bush Delicata | 80 | White with green stripes | Yellow orange | Compact 3 foot spread ~8 lb – early maturity |
| Early Butternut | 90 | Tan | Orange | 5 - 6 lbs |
| Katy's Sweet Meat | 95 | Gray | Orange | - |
| Marina di Chiogga | 80 | Dark green, bumpy | Orange | Italian heirloom, 8 - 10 lbs, sweetens with storage |
| Queensland Blue | 110 | Deep rib, dark blue | Intense orange | ~7 lb, good keeper, Australian heirloom |
| Sibley Winter | 100 | Gray green | Yellow orange | Heirloom from 1887 |
| Spaghetti | 85 | Creamy gold | Butter yellow | Japanese heirloom, 1965. Serve with pasta sauce. |
| Sugar loaf Delicata | 100 | Tan | Light orange | - |
| Table Queen | 85 | Dark green | Yellow | 1 squash = 2 serving |
| Triamble | 120 | Blue gray | Orange | 4 - 12 lbs (3 lobes) |
| Tahitian Butternut | 110 | Tan | Golden light orange | Eat raw or baked, 12 or more inches long |
| Burpee's Butterbush | 75 | Tan | Red orange | 4 ft. long bush, 4 to 5 per plant |
| Greek Sweet Red | 105 | Mostly green | Orange | Good insect resistance |
| Kabocha - Japanese pumpkin squash | 100-120 | Green | Orange | 4 - 6 lbs |
| Red Kuri | 110 | Bright orange red | Red-orange | Japanese heirloom - orange Hokkaido, 4 - 7 lbs |
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| Young Red Kuri winter squash wth a blossom 29 August 2009 |
Immature Spaghetti Squash growing on the fence 19 Sept 2009 |
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| Kabocha - Japanese Pumpkin Squash - The One Survivor |
Young Blue Hubbard Squash |
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| Marina di Chiogga on 29 August 2009 |
Queensland Blue on 29 August 2009 |
Pest and Disease Problems
Various pest problems were encountered, primarily gophers and squirrels but probably also a few rats, birds, and rabbits. Only two gophers were caught early on in the season. Later we quit setting traps because the roots of the plants would have been destroyed by the holes for the traps. The gopher runs tended to be located under the plants such that the plant would be demolished if we did enough digging to set the traps. Other community gardeners set above ground traps which have to be checked every day and they caught a variety of critters.|
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| Critter chewed Red Kuri | Gopher hole that had been hidden by the Early Butternut squash 12 September 2009 |
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| Sibley Winter Squash chewed by Gophers | Table Queen after being chewed by critters |
Harvesting Results
The first squash were picked on 10 October in preparation for the Field Day on 17 Oct. When available, 2 of each variety were picked for display on our Field Day or for tasting. Squash not taken by our volunteers at the end of the Field Day were donated to the Mountain View Community Services for distribution with the other food they distribute to the needy. The remaining squash were harvested on 24 October. Squash not taken by volunteers were donated to the Sunnyvale Community Services.
| Variety | Number of Squash | Number of Pounds |
| Blue Hubbard (Nichols Garden Nursery | 5 | 89.00 |
| Bon Bon Winter (Nichols Garden Nursery) | 4 | 8.31 |
| Cornell's Bush Delicata (Nichols Garden Nursery) | 7 | 6.40 |
| Early Butternut (Nichols Garden Nursery) | 4 | 8.60 |
| Katy's Sweet Meat (Nichols Garden Nursery) | 2 | 7.43 |
| Marina di Chiogga (Nichols Garden Nursery) | 6 | 51.75 |
| Queensland Blue (Nichols Garden Nursery) | 30 | 221.90 |
| Sibley Winter (Nichols Garden Nursery) | 8 | 38.56 |
| Spaghetti (Nichols Garden Nursery) | 8 | 20.66 |
| Sugar Loaf Delicata (Nichols Garden Nursery) | 0 | 0.00 |
| Table Queen (Nichols Garden Nursery) | 0 | 0.00 |
| Triamble (Nichols Garden Nursery) | 5 | 36.10 |
| Tahitian Butternut (Reimer Seeds) | 0 | 0.00 |
| Burpee's Butterbush (Burpee Seeds) | 2 | 5.60 |
| Greek Sweet Red (Sandhill Preservation) | 0 | 0.00 |
| Kabocha - Japanese pumpkin squash (Hamakua Seed and Supply Co.) | 1 | 4.70 |
| Red Kuri (Pinetree Garden Seeds) | 9 | 19.25 |
| TOTALS | 91 | 518.36 |
Harvesting Tips
Use clippers or loppers to cut the stems, depending on the size of the vine.Tasting Results
| Variety | Average Texture |
Average Flavor |
Comments |
| Tahitian Butternut |
4.33 | 4.57 |
Very good texture |
| Early Butternut |
3.90 |
3.90 |
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| Triamble | 3.81 | 3.60 | |
| Marina di Chiogga |
3.74 | 3.50 | Good pumpkin taste |
| Queensland Blue |
3.63 | 3.21 | |
| Kabocha - Japanese pumpkin squash |
3.57 | 3.57 | |
| Greek Sweet Red |
3.52 | 3.00 | |
| Katy's Sweet Meat |
3.00 | 3.10 | |
| Burpee's Butterbush |
2.92 | 3.13 | Very good |
| Bon Bon Winter |
2.62 | 2.90 | |
| Red Kuri |
2.41 | 2.64 | Too earthy tasting |
| Blue Hibbard |
2.27 | 2.55 | |
| Sibley Winter |
2.22 | 2.55 | |
| Spaghetti | 1.76 | 2.30 | Too bland |
| Variety | Average Flavor | Average Texture | Comments |
| Tahitian Butternut | 4.57 | 4.33 | |
| Early Butternut | 3.90 | 3.90 | |
| Triamble | 3.60 | 3.81 | |
| Kabocha - Japanese pumpkin squash | 3.57 | 3.57 | Good texture |
| Marina di Chiogga | 3.50 | 3.74 | |
| Queensland Blue | 3.21 | 3.63 | |
| Burpee's Butterbush | 3.13 | 2.92 | |
| Katy's Sweet Meat | 3.10 | 3.00 | |
| Greek Sweet Red | 3.00 | 3.52 | |
| Bon Bon Winter | 2.90 | 2.62 | |
| Red Kuri | 2.64 | 2.41 | Fair texture |
| Blue Hibbard | 2.55 | 2.27 | |
| Sibley Winter | 2.55 | 2.22 | |
| Spaghetti | 2.30 | 1.76 |











