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- Days to maturity
- 50 days
- Listed for
- United States
Overview
Success PM is an open-pollinated yellow straightneck released by Cornell University as an Early Prolific Straightneck derivative that shrugs off powdery mildew. Fruit is smooth and light yellow, and the plants look and behave like the old standard, but the foliage keeps photosynthesizing well after mildew has whitened neighboring plantings, so fruit set continues later into summer. That matters most in humid regions where mildew normally ends the squash season by midsummer. Direct sow in warm, fertile soil after frost; harvest at 5 to 6 inches for tender fruit and check daily at peak, since a missed squash grows oversized within a couple of days. About 50 days to maturity.
Success PM traits
- Open-pollinated yellow straightneck bred at Cornell University
- Smooth, light yellow fruit
- Resistant to powdery mildew
- Derived from Early Prolific Straightneck
- Keeps producing later into summer than mildew-susceptible types
Good for
- Sauteing and steaming
- Humid-climate gardens
- Seed saving
Compare with other zucchini varieties
Blank cells mean there is no data on record. Select a variety name to open its page.
| Variety | Days to maturity | Growth habit | Type |
|---|---|---|---|
| Success PM this page | 50 days | — | — |
| Albarello of Sarzana | 50–55 days | — | — |
| Ambassador | 50 days | — | — |
| Black Eel | 50–55 days | — | — |
| Black Magic | 50 days | Bush | — |
| Black Zucchini | 50 days | — | — |
| Born Free | 50 days | — | — |
Success PM FAQ
What kind of zucchini is Success PM?
Success PM is an open-pollinated yellow straightneck released by Cornell University as an Early Prolific Straightneck derivative that shrugs off powdery mildew. Fruit is smooth and light yellow, and the plants look and behave like the old standard, but the foliage keeps photosynthesizing well after mildew has whitened neighboring plantings, so fruit set continues later into summer.
How many days to maturity is Success PM?
Success PM is listed at 50 days. Sowing and planting times are the same as for other zucchini varieties, so check them in the zucchini growing guide.
How does Success PM compare with other zucchini varieties?
Success PM: 50 days. Similar zucchini varieties include Albarello of Sarzana (50–55 days), Ambassador (50 days), Black Eel (50–55 days). The comparison table on this page lists days to maturity, growth habit and type side by side.
What is Success PM good for?
Success PM is grown for sauteing and steaming, humid-climate gardens, seed saving.
Sowing, care and common problems
Sowing times, care and common problems are the same for every zucchini variety, so they are covered once in the growing guide.
- Zucchini growing guide
- How to Plant Zucchini: Spacing, Soil Warmth and How Much Room It Needs
- Hand Pollinating Zucchini and What to Do When There Are No Male Flowers
- Staking Zucchini and Removing Lower Leaves as You Pick
- Zucchini Problems: Powdery Mildew, Beetles and Rot
- When to Pick Zucchini: Four to Seven Days from Flowering
- Zucchini Growing Calendar: Sowing to the End of the Season
- All 179 zucchini varieties
Source
Source: Cornell University (CALS Garden-Based Learning)
The text on this page is our own summary written from the published variety record, not a copy of it.