how often should you use miracle grow on black eyed susans in pennsylvania

For black-eyed Susans in Pennsylvania, you usually do not need Miracle-Gro often; if you feed them at all, do it lightly in spring and, at most, once more in mid-summer. Penn State notes that many Rudbeckia varieties grown in Pennsylvania are perennials, and a local gardening source says black-eyed Susans generally do not require additional fertilizing during the growing season because too much fertilizer can make stems weak and floppy.

Practical schedule

• In the ground: skip routine feeding unless the soil is poor or plants look weak.
• If you use Miracle-Gro: apply it lightly about every 4 to 6 weeks during active growth, but only at a reduced strength rather than full-strength feeds.

• Stop feeding by late summer so the plant can harden off naturally before cold weather.

Pennsylvania timing

Pennsylvania gardens usually get black-eyed Susans going in spring, and that’s the best time to use any fertilizer sparingly. If the plants are established, they tend to handle local conditions well without much help, especially in full sun and well-drained soil.

Better rule of thumb

• Healthy, established plants: no regular Miracle-Gro needed.
• New plantings or poor soil: one light feeding in spring can help.
• Weak pale growth: a second light feeding in mid-summer is reasonable.
• Avoid overfeeding: it can reduce flower quality and make the plant flop.

Bottom line

If you want the safest answer: use Miracle-Gro on black-eyed Susans in Pennsylvania only sparingly, once in spring and maybe once again in mid- summer , not on a weekly schedule.